Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012hv in NGC 4681.
R. Antezana, P. Sanchez, M. Hamuy, L. Gonzalez, R. Cartier, F. Forster,
S. Silva, F. Carrasco, C. Hervias, and R. Ramirez, Universidad de Chile; G.
Pignata, M. Cifuentes, and Y. Apostolovski, Universidad Andres Bello; F. Aros,
Pontificia Universidad Catolica de Chile; B. Conuel, Wesleyan University; G.
Folatelli, IPMU, University of Tokyo; and D. Reichart, K. Ivarsen, J. Haislip,
A. Crain, D. Foster, M. Nysewander, and A. LaCluyze, University of North
Carolina at Chapel Hill, on behalf of the CHASE project (which is part of the
Millennium Center for Supernova Science collaboration), report the discovery
of an apparent supernova (mag approximately 16.1) on an unfiltered image
taken on Dec. 16.32 UT with the 0.41-m 'PROMPT 5' telescope located at Cerro
Tololo. The new object is located at R.A. = 12h47m29s.30 +/- 0".2, Decl. =
-43o19'44".3 +/- 0".2 (equinox 2000.0), which is about 5".5 east and 21".2
north of the center of the galaxy NGC 4681. Nothing is visible at this
position on archival images taken on July 8.10 (limiting mag 18.5). The
variable was designated PSN J12472930-4319443 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2012hv based on the
spectroscopic confirmation reported below. Joseph Brimacombe, Cairns,
Australia, writes that a stacked image of 2012hv taken with a 41-cm RCOS
telescope (+ infrared filter; bandpass > 700 nm) yields mag 16.9 and position
end figures 29s.28, 44".0; his image is posted at the following website URL:
http://www.flickr.com/photos/43846774@N02/8293368430/.
D. Milisavljevic, Harvard-Smithsonian Center for Astrophysics; R. Fesen,
Dartmouth College; T. Pickering, A. Kniazev, and A. Gulbis, South African
Astronomical Observatory and Southern African Large Telescope; and G. Pignata,
Universidad Andres Bello, report that low-dispersion spectra (range 330-890
nm), obtained on Dec. 21.1 UT with the 10-m SALT telescope (+ RSS), show PSN
J12472930-4319443 = SN 2012hv to be an old type-II supernova.
Cross-correlation with a library of supernova spectra using the "Supernova
Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows
good matches with the type-IIP event 2004et at approximately three months
after maximum light.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 December 23 (CBET 3352)
Daniel W. E. Green
Supernova 2012hv
Descubierta el 16/12/2012, Magnitud 16.1.
Encontrada en NGC 4681, R.A. = 12h47m29s.30, Decl. = -43°19'44".3 .
Localización 6".0 Este y 21".0 Norte del centro de NGC 4681.
Tipo II. PGC 43166.
Electronic Telegram No. 3347
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012hs in ESO 213-2.
M. Cifuentes, G. Pignata, and Y. Apostolovski, Universidad Andres Bello;
P. Sanchez, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S.
Silva, F. Carrasco, C. Hervias, and R. Ramirez, Universidad de Chile; F. Aros,
Pontificia Universidad Catolica de Chile; B. Conuel, Wesleyan University; G.
Folatelli, IPMU, University of Tokyo; and D. Reichart, K. Ivarsen, J. Haislip,
A. Crain, D. Foster, M. Nysewander, and A. LaCluyze, University of North
Carolina at Chapel Hill, on behalf of the CHASE project (which is part of the
Millennium Center for Supernova Science collaboration), report the discovery
of an apparent supernova (mag approximately 14.5) on unfiltered image taken
on Dec. 15.18 and 16.16 UT with the 0.41-m 'PROMPT 5' telescope located at
Cerro Tololo. The new object is located at R.A. = 9h49m14s.71 +/- 0".2, Decl.
= -47o54'45".6 +/- 0".2 (equinox 2000.0), which is about 18".3 west and 26".9
north of center of the galaxy ESO 213-2. Nothing is visible at this position
on archival images taken on Dec. 11.28 (limiting mag 18.5). The variable was
designated PSN J09491471-4754456 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2012hs based on the spectroscopic
confirmation reported below.
D. Milisavljevic, Harvard-Smithsonian Center for Astrophysics (CfA); R.
Fesen, Dartmouth College; T. Pickering and D. Buckley, South African
Astronomical Observatory and Southern African Large Telescope; and A.
Soderberg and R. Margutti, CfA, report that low-dispersion spectra (range
330-890 nm), obtained Dec. 18 and 19 UT with the 10-m SALT telescope (+ RSS),
show PSN J09491471-4754456 = SN 2012hs to be a very young type-II supernova.
Broad P-Cyg absorptions are observed over a strong blue continuum. After
removal of the host-galaxy (ESO 213-2) redshift of z = 0.006424 (via NED;
HIPASS 2006), the minimum of the H_alpha, H_beta, and Na I D features have
blueshifted velocities of approximately 15000 km/s.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 December 21 (CBET 3347)
Daniel W. E. Green
Supernova 2012hs
Descubierta el 15/12/2012, Magnitud 16.6.
Encontrada en ESO 213-2, R.A. = 09h49m14s.71, Decl. = -47°54'45".6 .
Localización 18".3 Oeste y 26".9 Norte del centro de ESO 213-2.
Tipo II. PGC 28234.
Electronic Telegram No. 3326
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012hf in NGC 3469.
M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S. Silva, F.
Carrasco, P. Sanchez, C. Hervias, and R. Ramirez, Universidad de Chile; G.
Pignata, M. Cifuentes, and Y. Apostolovski, Universidad Andres Bello; F. Aros,
Pontificia Universidad Catolica de Chile; B. Conuel, Wesleyan University;
G. Folatelli, IPMU, University of Tokyo; and D. Reichart, K. Ivarsen, J.
Haislip, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze, University of
North Carolina at Chapel Hill, on behalf of the CHASE project (which is
part of the Millennium Center for Supernova Science collaboration), report
the discovery of an apparent supernova (mag approximately 17.2) on an
unfiltered image taken on Nov. 22.32 UT with the 0.41-m 'PROMPT 5' telescope
located at Cerro Tololo. The new object, which is also present at mag
approximately 17.0 in an image taken on Nov. 23.31, is located at R.A. =
10h56m57s.46 +/- 0".2, Decl. = -14o17'37".8 +/- 0".2 (equinox 2000.0), which
is about 3".5 west and 23".9 north of the center of the galaxy NGC 3469.
Nothing is visible at this position on archival images taken on May 4.04
(limiting mag 18.0) or in a stack of eleven 40-s images taken between Feb.
25.22 and May 4.04 (limiting mag 19.5). The variable was designated PSN
J10565746-1417378 when it was posted at the Central Bureau's TOCP webpage
and is here designated SN 2012hf based on the spectroscopic confirmation
reported below. Additional CCD magnitudes for 2012hf: Nov. 24.432, 16.5
(L. Elenin, Lyubertsy, Russia; and I. Molotov, Moscow, Russia; images
taken remotely with a 0.45-m f/2.8 telescope at the ISON-NM Observatory
near Mayhill, NM, USA; limiting mag about 19.1; position end figures 57s.43
+/- 0".08, 38".4 +/- 0".08; UCAC-4 reference stars; image posted at website
URL http://spaceobs.org/images/TOCP/PSNJ10565746-1417378-20121124.png);
25.499, 17.8 (Joseph Brimacombe, Cairns, Australia; remotely using a 51-cm
RCOS telescope + luminance filter at the New Mexico Skies Observatory near
Mayhill; position end figures 57s.49, 37".7; image posted at website URL
http://www.flickr.com/photos/43846774@N02/8225320294/).
G. Pignata and F. Bufano, Universidad Andres Bello; S. Gonzalez-Gaitan,
S. Marchi, F. Forster, J. Anderson, and C. Gutierrez, Universidad de Chile; S.
Taubenberger, Max-Planck-Institute fuer Astrophysik, Garching; S. Valenti,
University of California at Santa Barbara and Las Cumbres Observatory Global
Telescope; A. Pastorello and S. Benetti, Istituto Nazionale di Astrofisica,
Padova Astronomical Observatory; S. J. Smartt, K. Smith, D. Young, and C.
Inserra, Queen's University, Belfast; M. Sullivan, University of Southampton;
and A. Gal-Yam and O. Yaron, Weizmann Institute for Science, on behalf of the
PESSTO collaboration (cf. Valenti et al., as posted at website URL
http://www.astronomerstelegram.org/?read=4037), report on optical spectroscopy
(range 360-910 nm), obtained on Nov. 23.34 UT with the New Technology
Telescope (+ EFOSC2), showing that PSN J10565746-1417378 = SN 2012hf is a
type-Ic supernova about a week before maximum. PESSTO classification spectra
can be obtained at website URL http://www.pessto.org/; classification is made
via SNID (Blondin and Tonry 2007, Ap.J. 666, 1024) and GELATO (Harutyunyan et
al. 2008, A.Ap. 488, 383).
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 December 03 (CBET 3326)
Daniel W. E. Green
Supernova 2012hf
Descubierta el 22/11/2012, Magnitud 17.8.
Encontrada en NGC 3469, R.A. = 10h56m57s.46, Decl. = -14°17'37".8 .
Localización 3".5 Oeste y 23".9 Norte del centro de NGC 3469.
Tipo Ic. PGC 32912.
Electronic Telegram No. 3325
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012he in MCG -06-12-2.
MM. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S. Silva, F.
Carrasco, P. Sanchez, C. Hervias, and R. Ramirez, Universidad de Chile; G.
Pignata, M. Cifuentes, and Y. Apostolovski, Universidad Andres Bello; F. Aros,
Pontificia Universidad Catolica de Chile; B. Conuel, Wesleyan University;
G. Folatelli, IPMU, University of Tokyo; and D. Reichart, K. Ivarsen, J.
Haislip, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze, University of
North Carolina at Chapel Hill, on behalf of the CHASE project (which is
part of the Millennium Center for Supernova Science collaboration), report
the discovery of an apparent supernova (mag approximately 18.2) on
unfiltered images taken on Nov. 22.32 and 23.18 UT with the 0.41-m 'PROMPT 1'
telescope located at Cerro Tololo. The new object is located at R.A. =
5h00m50s.07 +/- 0".2, Decl. = -38o39'11".4 +/- 0".2 (equinox 2000.0), which is
about 7".1 west and 5".6 north of center of the galaxy MCG -06-12-2. Nothing
is visible at this position on archival images taken on Nov. 1.31 (limiting
mag 18.5) or on a stack of twelve 40-s images taken between Jan. 4.10 and Nov.
1.31 (limiting mag 19.7). The variable was designated PSN J05005007-3839114
when it was posted at the Central Bureau's TOCP webpage and is here designated
SN 2012he based on the spectroscopic confirmation reported below.
G. Pignata and F. Bufano, Universidad Andres Bello; S. Gonzalez-Gaitan,
S. Marchi, F. Forster, J. Anderson, and C. Gutierrez, Universidad de Chile; S.
Taubenberger, Max-Planck-Institute fuer Astrophysik, Garching; S. Valenti,
University of California at Santa Barbara and Las Cumbres Observatory Global
Telescope; A. Pastorello and S. Benetti, Istituto Nazionale di Astrofisica,
Padova Astronomical Observatory; S. J. Smartt, K. Smith, D. Young, and C.
Inserra, Queen's University, Belfast; M. Sullivan, University of Southampton;
and A. Gal-Yam and O. Yaron, Weizmann Institute for Science, on behalf of the
PESSTO collaboration (cf. Valenti et al., as posted at website URL
http://www.astronomerstelegram.org/?read=4037), report on optical spectroscopy
(range 360-910 nm), obtained on Nov. 23.33 UT with the New Technology
Telescope (+ EFOSC2), showing that PSN J05005007-3839114 = SN 2012he is a
type-Ia supernova, 3-4 weeks after maximum. PESSTO classification spectra can
be obtained at website URL http://www.pessto.org/; classification is made via
SNID (Blondin and Tonry 2007, Ap.J. 666, 1024) and GELATO (Harutyunyan et al.
2008, A.Ap. 488, 383).
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 December 03 (CBET 3325)
Daniel W. E. Green
Supernova 2012he
Descubierta el 22/11/2012, Magnitud 18.2.
Encontrada en MCG -06-12-2, R.A. = 05h00m50s.07, Decl. = -38°39'11".4 .
Localización 7".1 Oeste y 5".6 Norte del centro de MCG -06-12-2.
Tipo Ia. PGC 16547.
Electronic Telegram No. 3323
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012hc in NGC 986A (ESO 299-6).
M. Cifuentes, G. Pignata, and Y. Apostolovski, Universidad Andres Bello;
J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S. Silva,
F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez, Universidad de Chile; F.
Aros, Pontificia Universidad Catolica de Chile; B. Conuel, Wesleyan
University; G. Folatelli, IPMU, University of Tokyo; and D. Reichart, K.
Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze,
University of North Carolina at Chapel Hill, on behalf of the CHASE project
(which is part of the Millennium Center for Supernova Science collaboration),
report the discovery of an apparent supernova (mag approximately 14.1) on an
unfiltered image taken on Nov. 10.16 UT with the 0.41-m 'PROMPT 4' telescope
located at Cerro Tololo. The new object is located at R.A. = 2h32m40s.96 +/-
0".2, Decl. = -39o17'56".2 +/- 0".2 (equinox 2000.0). Nothing is visible at
this position on a stack of fifteen 40-s CHASE images taken between Jan. 4.13
and Nov. 4.29 (limiting mag 20.6). The variable was designated PSN
J02324096-3917562 when it was posted at the Central Bureau's TOCP webpage and
is here designated SN 2012hc based on the spectroscopic confirmation reported
below. Additional magnitudes for 2012hc: Nov. 4.29, [18.5 (CHASE); 15.531,
15.2 (Joseph Brimacombe, Cairns, Australia; 43-cm CDK Planewave telescope +
infrared filter, bandpass > 700 nm; position end figures 40s.94, 56".3; image
posted at URL http://www.flickr.com/photos/43846774@N02/8198000641/.
G. Pignata and F. Bufano, Universidad Andres Bello; S. Gonzalez-Gaitan,
S. Marchi, F. Forster, J. Anderson, and C. Gutierrez, Universidad de Chile; S.
Taubenberger, Max-Planck-Institute fuer Astrophysik, Garching; S. Valenti,
University of California at Santa Barbara and Las Cumbres Observatory Global
Telescope; A. Pastorello and S. Benetti, Istituto Nazionale di Astrofisica,
Padova Astronomical Observatory; S. J. Smartt, K. Smith, D. Young, and C.
Inserra, Queen's University, Belfast; M. Sullivan, University of Southampton;
and A. Gal-Yam and O. Yaron, Weizmann Institute for Science, on behalf of the
PESSTO collaboration (cf. Valenti et al., as posted at website URL
http://www.astronomerstelegram.org/?read=4037), report on optical spectroscopy
(range 360-910 nm) obtained on Nov. 12.23 UT with the New Technology Telescope
(+ EFOSC2), showing PSN J02324096-3917562 = SN 2012hc to be a type-II
supernova at one week after explosion. PESSTO classification spectra can be
obtained at website URL http://www.pessto.org/; classification is made via
SNID (Blondin and Tonry 2007, Ap.J. 666, 1024) and GELATO (Harutyunyan et al.
2008, A.Ap. 488, 383).
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 December 03 (CBET 3323)
Daniel W. E. Green
Supernova 2012hc
Descubierta el 10/11/2012, Magnitud 14.1.
Encontrada en NGC 986A, R.A. = 2h32m40s.96, Decl. = -39º17'56".2.
Localización 0".0 Este y 0".0 Norte del centro de NGC 986A.
Tipo II. PGC 09686.
Electronic Telegram No. 3322
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012hb in ESO 90-15.
G. Pignata, M. Cifuentes, and Y. Apostolovski, Universidad Andres Bello;
J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S. Silva,
F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez, Universidad de Chile; F.
Aros, Pontificia Universidad Catolica de Chile; B. Conuel, Wesleyan
University; G. Folatelli, IPMU, University of Tokyo; and D. Reichart, K.
Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze,
University of North Carolina at Chapel Hill, on behalf of the CHASE project
(which is part of the Millennium Center for Supernova Science collaboration),
report the discovery of an apparent supernova (mag approximately 17.5) on an
unfiltered image taken on Nov. 4.33 UT with the 0.41-m 'PROMPT 4' telescope
located at Cerro Tololo. The new object is located at R.A. = 9h02m05s.46 +/-
0".2, Decl. = -64o54'19".7 +/- 0".2 (equinox 2000.0), which is about 1".0 west
and 4".6 south of the center of the galaxy ESO 90-15. Nothing is visible at
this position on archival images taken on Apr. 7.03 (limiting mag 18.5) or
in a stack of eighteen 40-sec images taken between 2011 Nov. 1.30 and 2012
Apr. 7.03 (limiting mag 20.4). The variable was designated PSN
J09020546-6454197 when it was posted at the Central Bureau's TOCP webpage
and is here designated SN 2012hb based on the spectroscopic confirmation
reported below. Joseph Brimacombe, Cairns, Australia, reports position end
figures 05s.44, 20".3 from exposures taken with 41-cm RCOS telescope (+
infrared filter on Nov. 15.748; his image is posted at the following website
URL: http://www.flickr.com/photos/43846774@N02/8198232937/.
G. Pignata and F. Bufano, Universidad Andres Bello; S. Gonzalez-Gaitan,
S. Marchi, F. Forster, J. Anderson, and C. Gutierrez, Universidad de Chile; S.
Taubenberger, Max-Planck-Institute fuer Astrophysik, Garching; S. Valenti,
University of California at Santa Barbara and Las Cumbres Observatory Global
Telescope; A. Pastorello and S. Benetti, Istituto Nazionale di Astrofisica,
Padova Astronomical Observatory; S. J. Smartt, K. Smith, D. Young, and C.
Inserra, Queen's University, Belfast; M. Sullivan, University of Southampton;
and A. Gal-Yam and O. Yaron, Weizmann Institute for Science, on behalf of the
PESSTO collaboration (cf. Valenti et al., as posted at website URL
http://www.astronomerstelegram.org/?read=4037), report on optical spectroscopy
(range 360-910 nm) obtained on Nov. 7.25 UT with the New Technology Telescope
(+ EFOSC2), showing PSN J09020546-6454197 = SN 2012hb to be a type-II
supernova at two months post-explosion. PESSTO classification spectra can be
obtained at website URL http://www.pessto.org/; classification is made via
SNID (Blondin and Tonry 2007, Ap.J. 666, 1024) and GELATO (Harutyunyan et al.
2008, A.Ap. 488, 383).
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 December 03 (CBET 3322)
Daniel W. E. Green
Supernova 2012hb
Descubierta el 04/11/2012, Magnitud 17.5.
Encontrada en ESO 90-15, R.A. = 9h02m05s.46, Decl. = -64º54'19".7.
Localización 1".0 Oeste y 4".6 Sur del centro de ESO 90-15.
Tipo II. PGC 25373.
Electronic Telegram No. 3284
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012fy.
F. Carrasco, R. Ramirez, J. Maza, M. Hamuy, R. Antezana, L. Gonzalez,
R. Cartier, F. Forster, S. Silva, P. Sanchez, and C. Hervias, Universidad de
Chile; G. Pignata, M. Cifuentes, and Y. Apostolovski, Universidad Andres
Bello; F. Aros, Pontificia Universidad Catolica de Chile; B. Conuel, Wesleyan
University; G. Folatelli, IPMU, University of Tokyo; and D. Reichart, K.
Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze,
University of North Carolina at Chapel Hill, on behalf of the CHASE project
(which is part of the Millennium Center for Supernova Science collaboration),
report the discovery of an apparent supernova (mag approximately 17.2) on an
unfiltered image taken on Aug. 12.07 UT with the 0.41-m 'PROMPT 5' telescope
located at Cerro Tololo. Thew new object is located at R.A. = 19h37m15s.72
+/- 0".2, Decl. = -42º18'27".1 +/- 0".2 (equinox 2000.0), which is about
12".7 east and 19".0 north of center of the presumed host galaxy. Nothing
is visible at this position in a stack of fifteen 40-s archival images taken
between 2011 July 14 and 18 (limiting mag 20.5). The variable was designated
PSN J19371572-4218271 when it was posted at the Central Bureau's TOCP webpage
and is here designated SN 2012fy based on the spectroscopic confirmation
reported below. Additional CCD magnitudes for 2012fy: July 18.10, [18.0
(CHASE); Aug. 13.05, 17.0 (CHASE); Aug. 17.466, 17.7 (Joseph Brimacombe,
Cairns, Australia; infrared filter; wavelength > 700 nm; position end figures
15s.70, 27".5; image posted at the following website URL:
http://www.flickr.com/photos/43846774@N02/7805169858/).
C. Inserra, S. J. Smartt, M. Fraser, D. Young, and K. Smith, Queen's
University, Belfast; F. Cellier-Holzem and P. El-Hage, Laboratoire de
Physique Nucleaire et de Hautes Energies, Paris; Y.-C. Pan, University of Oxford; M.
Sullivan, University of Southampton; I. Arcavi, A. Gal-Yam, and O. Yaron,
Wiezmann Institute of Science; S. Benetti, A. Pastorello, and S. Valenti,
Istituto Nazionale di Astrofisica, Padova; and S. Taubenberger, A. Sternberg,
and S. Benitez-Herrera, Max-Planck-Institute fuer Astrophysik, Garching, on
behalf of the PESSTO collaboration (see Valenti et al., posted at website URL
http://www.astronomerstelegram.org/?read=4037), report that optical
spectroscopy (range 360-910 nm), obtained on Aug. 18 with the New Technology
Telescope (+ EFOSC2), show that PSN J19371572-4218271 = SN 2012fy is a
type-IIP supernova at redshift z = 0.020; the best fit is to the spectrum of
SN 1999em at +10 to +12 days. PESSTO classification spectra can be obtained
from website URL http://www.pessto.org/; classification is made via SNID
(Blondin and Tonry 2007, Ap.J. 666, 1024) and GELATO (Harutyunyan et al.
2008, A.Ap. 488, 383).
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 November 01 (CBET 3284)
Daniel W. E. Green
Supernova 2012fy
Descubierta el 12/08/2012, Magnitud 17.2.
Encontrada en ESO 185-54, R.A. = 19h37m15s.72, Decl. = -42º18'27".1.
Localización 12".7 Este y 19".0 Norte del centro de una galaxia anónima.
Tipo IIP. PGC 63416.
Electronic Telegram No. 3286
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012ga in NGC 6976.
G. Pignata, M. Cifuentes, Y. Apostolovski, and M. Vidal, Universidad
Andres Bello; J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F.
Forster, S. Silva, F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez,
Universidad de Chile; F. Aros, Pontificia Universidad Catolica de Chile; B.
Conuel, Wesleyan University; G. Folatelli, IPMU, University of Tokyo; and D.
Reichart, K. Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander, and A.
LaCluyze, University of North Carolina at Chapel Hill, on behalf of the CHASE
project (which is part of the Millennium Center for Supernova Science
collaboration), report the discovery of an apparent supernova (mag
approximately 17.8) on an unfiltered image taken on Apr. 22.40 UT with the
0.41-m 'PROMPT 3' telescope located at Cerro Tololo. The new object is
located at R.A. = 20h52m25s.10 +/- 0".2, Decl. = -5º46'15".6 +/- 0".2
(equinox 2000.0), which is about 13".9 west and 4".8 north of the center of
the galaxy NGC 6976. Nothing is visible at this position on a stack of
fifteen 40-s archival images taken between 2011 Apr. 14.36 and 2012 Apr.
1.39 (limiting mag 20.5). The variable was designated PSN J20522510-0546156
when it was posted at the Central Bureau's TOCP webpage and is here
designated SN 2012ga based on the spectroscopic confirmation reported below.
Additional CCD magnitudes for 2012ga: Apr. 15.35, [18.0 (CHASE); 23.38, 17.5
(CHASE); 28.431, 18.9 (J. Brimacombe, Cairns, Australia; obtained remotely
using a 51-cm RCOS telescope + STL11K camera + luminance filter at the New
Mexico Skies Observatory near Mayhill, NM, U.S.A.; position end figures
25s.12, 16".1; image posted at http://www.flickr.com/photos/43846774@N02/7122722421/).
C. Inserra, S. J. Smartt, M. Fraser, D. Young, and K. Smith, Queen's
University, Belfast; F. Cellier-Holzem and P. El-Hage, Laboratoire de
Physique
Nucleaire et de Hautes Energies, Paris; Y.-C. Pan, University of Oxford; M.
Sullivan, University of Southampton; I. Arcavi, A. Gal-Yam, and O. Yaron,
Wiezmann Institute of Science; S. Benetti, A. Pastorello, and S. Valenti,
Istituto Nazionale di Astrofisica, Padova; and S. Taubenberger, A. Sternberg,
and S. Benitez-Herrera, Max-Planck-Institute fuer Astrophysik, Garching, on
behalf of the PESSTO collaboration (see Valenti et al., posted at website URL
http://www.astronomerstelegram.org/?read=4037), report that optical
spectroscopy (range 360-910 nm), obtained on Apr. 29 with the New Technology
Telescope (+ EFOSC2), show that PSN J20522510-0546156 = SN 2012ga is a
type-II supernova at redshift z = 0.020; the spectrum is similar to those of
a few type-II supernovae at two weeks past explosion. PESSTO classification
spectra can be obtained from website URL http://www.pessto.org/;
classification is made via SNID (Blondin and Tonry 2007, Ap.J. 666, 1024)
and GELATO (Harutyunyan et al. 2008, A.Ap. 488, 383).
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 November 01 (CBET 3286)
Daniel W. E. Green
Supernova 2012ga
Descubierta el 22/04/2012, Magnitud 17.8.
Encontrada en ESO 185-54, R.A. = 20h52m25s.10, Decl. = -5º46'15".6 .
Localización 13".9 Oeste y 4".8 Norte del centro de NGC 6976.
Tipo II. PGC 65620.
Electronic Telegram No. 3285
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012fz IN ESO 185-54.
J. Maza, M. Hamuy, R. Antezana,
L. Gonzalez, R. Cartier, F. Forster, S. Silva,
F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez,
Universidad de Chile; G. Pignata, M. Cifuentes,
Y. Apostolovski, and M. Vidal, Universidad Andres
Bello; F. Aros, Pontificia Universidad Catolica
de Chile; B. Conuel, Wesleyan University; G. Folatelli,
IPMU, University of Tokyo; and D. Reichart, K.
Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander,
and A. LaCluyze, University of North Carolina
at Chapel Hill, on behalf of the CHASE project
(which is part of the Millennium Center for Supernova
Science collaboration), report the discovery of
an apparent supernova ESO 185-54 (mag approximately
14.5) on a unfiltered image taken on June 27.38
UT with the 0.41-m 'PROMPT 1' telescope located
at Cerro Tololo. The new object is located at
R.A. = 20h03m24s.84 +/- 0".2, Decl. = -55º57'19".2
+/- 0".2 (equinox 2000.0), which is about 18".2
west and 29".3 south of center of the galaxy ESO
185-54. Nothing is visible at this position in
a stack of nine 40-s archival images taken between
Mar. 26.38 and May 24.39 (limiting mag 20.0).
The variable was designated PSN J20032484-5557192
when it was posted at the Central Bureau's TOCP
webpage and is here designated SN 2012fz based
on the spectroscopic confirmation reported below.
Additional CCD magnitudes for 2012fz: June 5.25,
[18.0 (CHASE); July 1.622, 15.9 (Joseph Brimacombe,
Cairns, Australia; infrared filter; wavelength
> 700 nm; position end figures 24s.84, 19".1;
image posted at URL http://www.flickr.com/photos/43846774@N02/7485846136/);
7.47, 14.5 (A. Klotz; TAROT telescope at La Silla,
Chile).
C. Inserra, S. J. Smartt, M. Fraser, D.
Young, and K. Smith, Queen's University, Belfast;
F. Cellier-Holzem and P. El-Hage, Laboratoire
de Physique Nucleaire et de Hautes Energies, Paris;
Y.-C. Pan, University of Oxford; M. Sullivan,
University of Southampton; I. Arcavi, A. Gal-Yam,
and O. Yaron, Wiezmann Institute of Science; S.
Benetti, A. Pastorello, and S. Valenti, Istituto
Nazionale di Astrofisica, Padova; and S. Taubenberger,
A. Sternberg, and S. Benitez-Herrera, Max-Planck-Institute
fuer Astrophysik, Garching, on behalf of the PESSTO
collaboration (see Valenti et al., posted at website
URL http://www.astronomerstelegram.org/?read=4037),
report that optical spectroscopy (range 360-910
nm), obtained on Aug. 7 with the New Technology
Telescope (+ EFOSC2), show that PSN J20032484-5557192
= SN 2012fz is a type-Ia supernova at redshift
z = 0.017; the best fit is to the spectrum of
SN 2003du at 33 days past explosion. PESSTO classification
spectra can be obtained from website URL http://www.pessto.org/;
classification is made via SNID (Blondin and Tonry
2007, Ap.J. 666, 1024) and GELATO (Harutyunyan
et al. 2008, A.Ap. 488, 383).
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 November 01 (CBET 3285)
Daniel W. E. Green
Supernova 2012fz
Descubierta el 27/06/2012, Magnitud 14.5.
Encontrada en ESO 185-54, R.A. = 20h03m24s.84, Decl. = -55º7'19".2 .
Localización 18".2 Oeste y 29".3 Sur del centro de ESO 185-54.
Tipo Ia. PGC 64041.
Electronic Telegram No. 3232
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012ev.
G. Pignata, M. Cifuentes, and Y. Apostolovski, Universidad Andres Bello;
J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S. Silva,
F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez, Universidad de Chile; F.
Aros, Pontificia Universidad Catolica de Chile; B. Conuel, Wesleyan
University; G. Folatelli, IPMU, University of Tokyo; and D. Reichart, K.
Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze,
University of North Carolina at Chapel Hill, on behalf of the CHASE project
(which is part of the Millennium Center for Supernova Science collaboration),
report the discovery of an apparent supernova (mag approximately 17.8) on an
unfiltered image taken on Sept. 5.08 UT with the 0.41-m 'PROMPT 3' telescope
located at Cerro Tololo. The new object is located at R.A. = 22h03m02s.99
+/- 0".2, Decl. = -22º31'01".0 +/- 0".2 (equinox 2000.0), which is about 4".9
west and 0".5 south of center of the presumed host galaxy. The variable was
designated PSN J22030299-2231010 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2012ev based on the spectroscopic
confirmation reported below. Additional unfiltered CCD magnitudes for 2012ev:
2011 July 24-2012 Aug. 28, [20.5 (stack of twenty-two 40-s CHASE images); 2012
Aug. 28.10, [18.5 (CHASE); Sept. 6.05, 17.7 (CHASE); 8.945, 18.2 (Federica
Luppi and Luca Buzzi, Varese, Italy; 0.38-m f/6.8 reflector; position end
figures 03s.05, 00".6; reference stars from CMC-14 catalogue; image posted at
website URL http://www.astrogeo.va.it/pub/TOCP/PSN_J22030299-2231010.jpg).
Joseph Brimacombe, Cairns, Australia, reports that four 15-min CCD images
taken with a 41-cm RCOS telescope (+ STL6K camera + infrared filter) yields
position end figures 02s.97, 00".0 (photometry was too difficult due to the
background light of the presumed host galaxy); his image is posted at website
URL http://www.flickr.com/photos/43846774@N02/7974278686/.
N. Morrell, Las Campanas Observatory; and G. Pignata, Universidad Andres
Bello, on behalf of the Millenium Center for Supernova Science and the
Carnegie Supernova Project collaboration, write that on Sept. 13.07 UT they
obtained an optical spectrogram (range 380-920 nm) of PSN J22030299-2231010 =
SN 2012ev with the du Pont telescope (+ WFCCD) at Las Campanas Observatory,
which reveals this is a type-Ia supernova approximately one week after
maximum brightness. Cross-correlation with a library of supernova spectra
using the Supernova Identification tool (SNID; Blondin and Tonry 2007, Ap.J.
666, 1024) suggests that 2012ev is a normal type-Ia supernova, very similar
to SN 1998co at seven days after maximum light. Adopting for the host galaxy
(2MASX J22030334-2231004) a recession velocity of 21952 km/s (Jones et al.
2009, The 6dF Galaxy Survey Data Release 3; via NED), the minimum of the Si
II 635.5-nm absorption appears to be blueshifted by 10450 km/s.
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 September 17 (CBET 3232)
Daniel W. E. Green
Supernova 2012ev
Descubierta el 05/09/2012, Magnitud 17.8.
Encontrada en galaxia anónima, R.A. = 22h03m02s.99, Decl. = -22°31'01".0 .
Localización 5" Oeste y 0" Norte del centro de una galaxia anónima.
Tipo Ia. cerca de PGC 67920.
Electronic Telegram No. 3170
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012dl in ESO 459-6.
G. Pignata, M. Cifuentes, Y. Apostolovski, and M. Vidal, Universidad
Andres Bello; J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F.
Forster, S. Silva, F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez,
Universidad de Chile; F. Aros, Pontificia Universidad Catolica de Chile; B.
Conuel, Wesleyan University; G. Folatelli, IPMU, University of Tokyo; and D.
Reichart, K. Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander, and A.
LaCluyze, University of North Carolina at Chapel Hill, on behalf of the CHASE
project (which is part of the Millennium Center for Supernova Science
collaboration), report the discovery of an apparent supernova (mag
approximately 16.3) on an unfiltered image taken on June 6.16 UT with the
0.41-m 'PROMPT 3' telescope located at Cerro Tololo. The new object is
located at R.A. = 19h12m08s.21 +/- 0".2, Decl. = -32º07'37".0 +/- 0".2
(equinox 2000.0), which is about 7".9 west and 1".8 south of the center of
the galaxy ESO 459-6. The variable was designated PSN J19120821-3207370
when it was posted at the Central Bureau's TOCP webpage and is here designated
SN 2012dl based on the spectroscopic confirmation reported below. Additional
magnitudes for 2012dl: 2011 Mar. 25.32-2012 May 24.23, [20.0 (stack of
fifteen 40-s CHASE images); 2012 May 24.23, [18.0 (CHASE); June 7.13, 16.4
(CHASE); 9.703, 18.5 (Joseph Brimacombe, Cairns, Australia; image taken with
infrared filter; position end figures 08s.18, 37".5; image posted at website
URL http://www.flickr.com/photos/43846774@N02/7356060622/); 18.716, 18.7
(Brimacombe; position end figures 08s.31, 37".1; image posted at website URL
http://www.flickr.com/photos/43846774@N02/7496901246/).
G. Pignata, Universidad Andres Bello; and T. De Jaeger, Universidad de
Chile, on behalf of the Millennium Center for Supernova Science collaboration,
report that a low-dispersion spectrogram (range 370-940 nm) of PSN
J19120821-3207370 = SN 2012dl, obtained on June 23.1 UT with the 6.5-m Magellan
II Clay telescope (+ LDSS3), shows that it is a type-Ia supernova. Cross-
correlation with a library of supernova spectra using the Supernova
Identification Code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) gives a
good match with SN 1994D at three weeks after maximum light.
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 July 08 (CBET 3170)
Daniel W. E. Green
Supernova 2012dl
Descubierta el 06/06/2012, Magnitud 16.3.
Encontrada en ESO 459-6 , R.A. = 19h12m08s.21, Decl. = -32º07'37".0.
Localización 7".9 Oeste y 1".8 Sur del centro de ESO 459-6.
Tipo Ia. PGC 62889.
Electronic Telegram No. 3163
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012dh.
J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S.
Silva, F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez, Universidad de
Chile; G. Pignata, M. Cifuentes, Y. Apostolovski, and M. Vidal, Universidad
Andres Bello; F. Aros, Pontificia Universidad Catolica de Chile; B. Conuel,
Wesleyan University; G. Folatelli, IPMU, University of Tokyo; and D. Reichart,
K. Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze,
University of North Carolina at Chapel Hill, on behalf of the CHASE project
(which is part of the Millennium Center for Supernova Science collaboration),
report the discovery of an apparent supernova (mag approximately 13.5 +/- 0.3)
on an unfiltered image taken on June 26.98 UT with the 0.41-m 'PROMPT 3'
telescope located at Cerro Tololo. The new object is located at R.A. =
13h11m09s.04 +/- 0".2, Decl. = -28o00'33".1 +/- 0".2 (equinox 2000.0), which
is about 6".9 west and 3".9 north of center of the galaxy ESO 443-80. The
variable was designated PSN J13110904-2800331 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2012dh based on the
spectroscopic confirmation reported below. Additional CCD magnitudes for
2012dh: June 20.04, [18.5 (CHASE); 23.11, [18.0 (CHASE); July 1.396, 14.7
(Joseph Brimacombe, Cairns, Australia; 41-cm RCOS telescope + STL6K camera +
infrared filter; bandpass > 700 nm; position end figures 09s.05, 33".2; image
posted at website URL http://www.flickr.com/photos/43846774@N02/7489603334/).
D. Milisavljevic, Harvard-Smithsonian Center for Astrophysics (CfA); R.
Fesen, Dartmouth College; A. Soderberg and R. Margutti, CfA; T. Pickering, P.
Kotze, and S. Crawford, South African Astronomical Observatory; and G. Pignata,
Universidad Andres Bello, report that low-dispersion spectra (range 320-900 nm)
obtained on June 28.84, 30.84, and July 2.84 UT with the 10-m SALT telescope
(+ RSS) of PSN J13110904-2800331 = 2012dh show it to be a type-II supernova.
All spectra are dominated by a very blue continuum and relatively weak H Balmer
P-Cyg absorptions that have been increasing in strength between epochs,
suggesting that these data have been obtained not long after outburst. The
July 2 spectrum is similar to spectra of the type-IIb event 1987K at early
times (Filippenko 1988, A.J. 96, 6). From this spectrum, the blueshifted
velocity of the considerably broad H_alpha profile is estimated to be -11600
km/s after removal of the host-galaxy recession velocity of 2115 km/s (Garcia
et al. 1994, A.Ap. Suppl. 107, 256).
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 July 04 (CBET 3163)
Daniel W. E. Green
Descubierta el 26/06/2012, Magnitud 14.7.
Encontrada en ESO 443-080, R.A. = 13h11m09s.04, Decl. = -28°00'33".1.
Localización 6".9 Oeste y 3".9 Norte del centro de ESO 443-080.
Tipo IIb. PGC 45764.
Electronic Telegram No. 3125
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012cl in ESO 263-23.
J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier, F. Forster, S.
Silva, F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez, Universidad de
Chile; G. Pignata, M. Cifuentes, Y. Apostolovski, and M. Vidal, Universidad
Andres Bello; F. Aros, Pontificia Universidad Catolica de Chile; B. Conuel,
Wesleyan University; G. Folatelli, IPMU, University of Tokyo; and D. Reichart,
K. Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze,
University of North Carolina at Chapel Hill, on behalf of the CHASE project
(which is part of the Millennium Center for Supernova Science collaboration)
report the discovery of an apparent supernova (mag approximately 16.0 +/- 0.4)
on unfiltered images taken on May 10.99 and 11.99 UT with the 0.41-m 'PROMPT
3' telescope located at Cerro Tololo. The new object is located at R.A. =
10h14m50s.93 +/- 0".2, Decl. = -43o37'48".8 +/- 0".2 (equinox 2000.0), which
is about 69".8 west and 40".2 south of the center of the galaxy ESO 263-23.
Nothing is visible at this position on archival images taken on May 4.01
(limiting mag 18.5) and in a stack of thirteen 80-s images taken between
2011 Apr. 1.14 and 2012 May 4.01 (limiting mag 20.5). The variable was
designated PSN J10145093-4337488 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2012cl based on the spectroscopic
confirmation reported below.
D. Milisavljevic, Harvard-Smithsonian Center for Astrophysics; R. Fesen,
Dartmouth College; and T. Pickering, South African Astronomical Observatory
and Southern African Large Telescope, report that low-dispersion spectra
(range 350-880 nm), obtained on May 24.8 UT with the 10-m SALT telescope (+
RSS), show PSN J10145093-4337488 = SN 2012cl to be a type-II supernova.
Cross-correlation with a library of supernova spectra using the "Supernova
Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows
reasonable matches to the type-IIP events SN 2004et and SN 1999em at about
ten days after maximum light.
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 May 26 (CBET 3125)
Daniel W. E. Green
Descubierta el 10/05/2012, Magnitud 16.0.
Encontrada en ESO 263-23 ,
R.A. = 10h14m50s.93, Decl. = -43°37'48".8.
Localización 69".8 Oeste y 40".2 Sur del centro de ESO 263-23.
Tipo IIp. PGC 29915.
Electronic Telegram No. 3087
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012bt in IC 4674.
G. Pignata, M. Cifuentes, Y. Apostolovski, and M. Vidal, Universidad
Andres Bello; J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, F. Carrasco, R.
Cartier, F. Forster, S. Silva, P. Sanchez, C. Hervias, and R. Ramirez,
Universidad de Chile; F. Aros, Pontificia Universidad Catolica de Chile; B.
Conuel, Wesleyan University; G. Folatelli, IPMU, University of Tokyo; and D.
Reichart, K. Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander, and A.
LaCluyze, University of North Carolina at Chapel Hill, on behalf of the CHASE
project (which is part of the Millennium Center for Supernova Science
collaboration), report the discovery of an apparent supernova (magnitude
approximately 16.5) on an unfiltered image taken on Mar. 7.30 UT with the
0.41-m 'PROMPT 1' telescope located at Cerro Tololo. The new object is
located at R.A. = 18h08m13s.05 +/- 0".2, Decl. = -62o23'54".2 +/- 0".2
(equinox 2000.0), which is about 0".2 east and 10".8 south of the center of
the galaxy IC 4674. Nothing is visible at this position on an image from
the SuperCOSMOS Sky Survey taken in 1976 (limiting mag 22). The variable was
designated PSN J18081305-6223542 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2012bt based on the spectroscopic
confirmation reported below. Additional magnitudes for 2012bt (assumed
unfiltered CCD unless noted otherwise): Feb. 12.36, [18.5 (CHASE); Mar.
10.26, 16.2 (CHASE); 24.699, 17.3 (Joseph Brimacombe, Cairns, Australia;
41-cm RCOS telescope + STL6K camera + infrared filter, wavelength range >
700 nm; position end figures 13s.10, 53".8; image posted at website URL
http://www.flickr.com/photos/43846774@N02/7012499211/); Apr. 1.786, 19.7
(Brimacombe; position end figures 13s.12, 53".8; red magnitude specified);
2.738, 18.7 (Brimacombe; infrared filter; position end figures 13s.15, 53".5).
N. Morrell, Las Campanas Observatory; P. Lopez and P. Lira, Universidad
de Chile; G. Pignata and F. Bufano, Universidad Andres Bello, report that an
optical spectrogram (range 370-910 nm) of PSN J18081305-6223542 = SN 2012bt,
obtained on Mar. 29.37 UT with the du Pont 2.5-m telescope (+ WFCCD) at Las
Campanas Observatory, shows it to be a type-Ic supernova. Using a recession
velocity of 4314 km/s for IC 4674 (Mathewson et al. 1992, Ap.J. Suppl. 81,
413; via NED), GELATO (Harutyunyan et al. 2008, A.Ap. 488, 383; publicly
available at https://gelato.tng.iac.es) indicates that the best matches for
this spectrum are with spectra of the type-Ic supernova 2004aw (Taubenberger
et al. 2006, MNRAS 371, 1459) at one month after the maximum light.
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 April 19 (CBET 3087)
Daniel W. E. Green
Descubierta el 10/03/2012,
Magnitud 16.5.
Encontrada en IC 4674 ,
R.A. = 18h08m13s.05, Decl. = -62°23'54".3.
Localización 0" Este y 11" Sur del centro de IC 4674.
Tipo Ic. PGC 61445
Electronic Telegram No. 3076
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012bl.
G. Pignata, M. Cifuentes, Y. Apostolovski,
and M. Vidal, Universidad Andres Bello; J. Maza,
M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier,
F. Forster, S. Silva, F. Carrasco, P. Sanchez,
C. Hervias, and R. Ramirez, Universidad de Chile;
F. Aros, Pontificia Universidad Catolica de Chile;
B. Conuel, Wesleyan University; G. Folatelli,
IPMU, University of Tokyo; and D. Reichart, K.
Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander,
and A. LaCluyze, University of North Carolina
at Chapel Hill, on behalf of the CHASE project
(which is part of the Millennium Center for Supernova
Science collaboration), report the discovery of
an apparent supernova (mag approximately 15.4)
on an unfiltered image taken on Mar. 26.38 UT
with the 0.41-m 'PROMPT 5' telescope located at
Cerro Tololo. The new object, which is also present
at mag approximately 15.2 in an image taken on
Mar. 27.37, is located at R.A. = 20h23m55s.28
+/- 0".2, Decl. = -48°21'17".3 +/- 0".2 (equinox
2000.0), which is about 42".9 east and 14".6 north
of the center of the galaxy ESO 234-19. Nothing
is visible at this position on archival images
taken on Mar. 11.38 (limiting mag 18.5) and in
stack of fifteen 40-s images taken between 2011
Mar. 24.35 and Nov. 9.10 (limiting mag 20.5).
The variable was designated PSN J20245528-4821173
based on an erroneous digit (24s instead of 23s
for the right ascension) when it was posted at
the Central Bureau's TOCP webpage and is here
designated SN 2012bl based on the spectroscopic
confirmation reported below.
J. L. Prieto, Princeton University, reports that
he obtained an optical spectrum (range 370-930
nm) of PSN J20245528-4821173 = SN 2012bl on Mar.
27.28 UT using the du Pont 2.5-m telescope (+
WFCCD) at Las Campanas Observatory. The spectrum
is that of a young type-Ia supernova. Cross-correlation
with a sample of template supernovae spectra using
SNID (Blondin and Tonry 2007, Ap.J. 666, 1024)
shows that the best match is to the spectrum of
SN 2003du at seven days before maximum light.
After correcting the spectrum for the recession
velocity of the host galaxy, ESO 234-19, of 5608
km/s (Mathewson and Ford 1996, Ap.J. Suppl. 107,
97), the minimum velocity of the Si II 635-nm
absorption feature is measured to be -15000 km/s.
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 March 29 (CBET 3076)
Daniel W. E. Green
Descubierta
el 26/03/2012,
Magnitud 15.4.
Encontrada en ESO 234-19 ,
R.A. = 20h23m55s.28, Decl. = -48°21'17".3.
Localización 42".9 Este
y 14".6 Norte del
centro de ESO 234-19 .
Tipo Ia. PGC 64611.
Electronic Telegram No. 3075
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012bk.
[Editor's note: this text replaces
that on CBET 3074 (correction to designation in
title).]
J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, R.
Cartier, F. Forster, S. Silva, F. Carrasco, P.
Sanchez, C. Hervias, and R. Ramirez, Universidad
de Chile; G. Pignata, M. Cifuentes, Y. Apostolovski,
and M. Vidal, Universidad Andres Bello; F. Aros,
Pontificia Universidad Catolica de Chile; B. Conuel,
Wesleyan University; G. Folatelli, IPMU, University
of Tokyo; and D. Reichart, K. Ivarsen, J. Haislip,
A. Crain, D. Foster, M. Nysewander, and A. LaCluyze,
University of North Carolina at Chapel Hill, on
behalf of the CHASE project (which is part of
the Millennium Center for Supernova Science collaboration),
report the discovery of an apparent supernova
(mag approximately 16.8) on an unfiltered image
taken on Mar. 25.34 UT with the 0.41-m 'PROMPT
5' telescope located at Cerro Tololo. The new
object is located at R.A. = 13h54m51s.69 +/- 0".2,
Decl. = -26°30'46".4 +/- 0".2 (equinox 2000),
which is about 8".2 west and 3".6 north of the
center of the presumed host galaxy. The variable
was designated PSN J13545169-2630464 when it was
posted at the Central Bureau's TOCP webpage and
is here designated SN 2012bk based on the spectroscopic
confirmation reported below. Additional CCD magnitudes
for 2012bk: Feb. 4.29-Mar. 7.15, [19.5 (CHASE;
eight stacked 40-s images); Mar. 14.27, [18.0
(CHASE); 26.25, 16.0 (CHASE); 27.415, 17.3 (Joseph
Brimacombe, Cairns, Australia; remotely using
a 51-cm RCOS telescope + STL11K camera + luminance
filter at the New Mexico Skies Observatory near
Mayhill, NM, U.S.A.; position end figures 51s.68,
46"; image posted at website URL http://www.flickr.com/photos/43846774@N02/7023051949/).
J. L. Prieto, Princeton University, reports that
he obtained an spectrum (range 370-930 nm) of
PSN J13545169-2630464 = SN 2012bk on Mar. 27.22
UT using the du Pont 2.5-m telescope (+ WFCCD)
at Las Campanas Observatory. The spectrum shows
a blue continuum with several broad absorption
features, the strongest ones at 578, 633, and
657 nm. The redshift of the host galaxy is determined
from unresolved emission lines in the spectrum
that are consistent with the wavelengths of H-beta,
[O III] 500.7-nm, and H-alpha at z = 0.0176. After
correcting the spectrum of the object to the rest
wavelength, we find that the absorption features
are consistent with blueshifted He I lines, most
prominently the He I 587.5-nm has the absorption
minimum at -10300 km/s. These properties are consistent
with a type-Ib supernova around maximum light
(e.g., Modjaz et al. 2009, Ap.J. 702, 226).
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 March 29 (CBET 3075)
Daniel W. E. Green
Descubierta
el 25/03/2012,
Magnitud 16.8.
Encontrada en galaxia anónima, R.A.
= 13h54m51s.69, Decl. = -26°30'46".4.
Localización 8".2 Oeste
y 3".6 Norte del centro
de una galaxia anónima.
(cerca de ESO
510-G12)
Tipo Ib. PGC 49439 .
Electronic Telegram No. 3060
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012bc.
J. Maza, M. Hamuy, R. Antezana,
L. Gonzalez, R. Cartier, F. Forster, S. Silva,
F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez,
Universidad de Chile; G. Pignata, M. Cifuentes,
Y. Apostolovski, and M. Vidal, Universidad Andres
Bello; F. Aros, Pontificia Universidad Catolica
de Chile; B. Conuel, Wesleyan University; G. Folatelli,
IPMU, University of Tokyo; and D. Reichart, K.
Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander,
and A. LaCluyze, University of North Carolina
at Chapel Hill, on behalf of the CHASE project
(which is part of the Millennium Center for Supernova
Science collaboration), report the discovery of
an apparent supernova (mag approximately 17.8)
on an unfiltered image taken on Feb. 3.27 UT with
the 0.41-m 'PROMPT 1' telescope located at Cerro
Tololo. The new object is located at R.A. = 10h58m14s.99
+/- 0".2, Decl. = -46°34'31".5 +/- 0".2 (equinox
2000.0). The variable was erroneously designated
PSN J0581499-4634315 when it was posted at the
Central Bureau's TOCP webpage and is here designated
SN 2012bc based on the spectroscopic confirmation
reported below. Additional CHASE magnitudes for
2012bc: Jan. 25.18, [18.0; Feb. 4.07, 17.7; 21.10,
18.3].
N. Morrell, Las Campanas Observatory; J. Anderson,
Universidad de Chile; G. Pignata, Universidad
Andres Bello; and G. Folatelli, Kavli IPMU, University
of Tokyo, on behalf of the Millenium Center for
Supernova Science and Carnegie Supernova Project
collaboration, report on optical spectroscopy
(range 370-940 nm) obtained on Mar. 2 UT with
the 6.5-m Magellan II Clay telescope (+ LDSS3).
The data were cross-correlated with a library
of supernova spectra using the Supernova Identification
Code (SNID; Blondin and Tonry 2007, Ap.J. 666,
1024). PSN J0581499-4634315 = SN 2012bc is a normal
type-Ia supernova at approximately 3 weeks past
maximum brightness.
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 March 21 (CBET 3060)
Daniel W. E. Green
Descubierta
el 03/02/2012,
Magnitud 17.8.
Encontrada en galaxia anónima,R.A.
= 10h58m14s.99, Decl. = -46°34'31".5.
Localización 0" Este
y 0" Norte del centro
de galaxia anónima.
(cerca de NGC
3482)
Tipo Ia. PGC 33025.
Electronic Telegram No. 3059
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012bb in PGC 39723.
G. Pignata, M. Cifuentes, Y. Apostolovski,
and M. Vidal, Universidad Andres Bello; J. Maza,
M. Hamuy, R. Antezana, L. Gonzalez, and R. Cartier,
F. Forster, S. Silva, F. Carrasco, P. Sanchez,
C. Hervias, and R. Ramirez, Universidad de Chile;
F. Aros, Pontificia Universidad Catolica de Chile;
B. Conuel, Wesleyan University; G. Folatelli,
IPMU, University of Tokyo; and D. Reichart, K.
Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander,
and A. LaCluyze, University of North Carolina
at Chapel Hill, on behalf of the CHASE project
(which is part of the Millennium Center for Supernova
Science collaboration), report the discovery of
an apparent supernova (mag approximately 15.9)
on an unfiltered image taken on Feb. 2.19 UT with
the 0.41-m 'PROMPT 5' telescope located at Cerro
Tololo. The new object is located at R.A. = 12h19m51s.97
+/- 0".2, Decl. = -36°27'26".1 +/- 0".2 (equinox
2000.0), which is about 11".4 east and 8".0 north
of the center of the galaxy PGC 39723 (= ESO 380-14).
The variable was designated PSN J12195197-3627261
when it was posted at the Central Bureau's TOCP
webpage and is here designated SN 2012bb based
on the spectroscopic confirmation reported below.
Additional CCD magnitudes for 2012bb: 2011 May
16.15, [18.5 (CHASE); 2012 Feb. 3.14, 15.6 (CHASE);
10.802, 15.7: (J. Brimacombe, Cairns, Australia;
41-cm RCOS telescope + STL6K camera + infrared
filter, bandpass > 700 nm; poor seeing/transparency;
position end figures 52s.02, 27".0; marginal,
uncertain detection); 11.545, 15.8 (Brimacombe;
position end figures 52s.01, 26".6; image posted
at URL http://www.flickr.com/photos/43846774@N02/6860587117/).
Brimacombe notes that there is an area of brightening
at the approximate position of 2012bb in a Digitized
Sky Survey image.
N. Morrell, Las Campanas Observatory; J. Anderson,
Universidad de Chile; G. Pignata, Universidad
Andres Bello; and G. Folatelli, Kavli IPMU, University
of Tokyo, on behalf of the Millenium Center for
Supernova Science and Carnegie Supernova Project
collaboration, report on optical spectroscopy
(range 370-940 nm) obtained on Mar. 2 UT with
the 6.5-m Magellan II Clay telescope (+ LDSS3).
The data were cross-correlated with a library
of supernova spectra using the Supernova Identification
Code (SNID; Blondin and Tonry 2007, Ap.J. 666,
1024). PSN J12195197-3627261 = SN 2012bb is a
type-IIP supernova at about 2-3 weeks after maximum
light.
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 March 21 (CBET 3059)
Daniel W. E. Green
Descubierta
el 02/02/2012, Magnitud 15.9.
Encontrada en ESO 380-014, R.A.
= 12h19m51s.97, Decl. = -36°27'26".1.
Localización 11".4 Este y 8".0 Norte del centro
de ESO 380-014.
Tipo IIP. PGC39723.
Electronic Telegram No. 3058
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012ba in ESO 328-46.
G. Pignata, M. Cifuentes, Y. Apostolovski,
and M. Vidal, Universidad Andres Bello; J. Maza,
M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier,
F. Forster, S. Silva, F. Carrasco, P. Sanchez,
C. Hervias, and R. Ramirez, Universidad de Chile;
F. Aros, Pontificia Universidad Catolica de Chile;
B. Conuel, Wesleyan University; G. Folatelli,
IPMU, University of Tokyo; and D. Reichart, K.
Ivarsen, J. Haislip, A. Crain, D. Foster, M. Nysewander,
and A. LaCluyze, University of North Carolina
at Chapel Hill, on behalf of the CHASE project
(which is part of the Millennium Center for Supernova
Science collaboration), report the discovery of
an apparent supernova (mag approximately 16.6)
on a unfiltered image taken on Jan. 21.33 UT with
the 0.41-m 'PROMPT 1' telescope located at Cerro
Tololo. The new object is located at R.A. = 15h22m25s.12
+/- 0".2, Decl. = -38°12'04".2 +/- 0".2 (equinox
2000.0), which is about 7".3 east and 6".3 south
of the center of the galaxy ESO 328-46. The variable
was designated PSN J15222512-3812042 when it was
posted at the Central Bureau's TOCP webpage and
is here designated SN 2012ba based on the spectroscopic
confirmation reported below. Additional CCD magnitudes
for 2012ba: 2011 Jan. 12.34-May 9.21, [20.5 (stack
of fourteen 80-s CHASE images); May 15.20, [17.5
(CHASE); 2012 Jan. 24.29, 16.3 (CHASE); Feb. 1.706,
15.9 (J. Brimacombe, Cairns, Australia; 41-cm
RCOS telescope + STL6K camera + infrared filter,
bandpass > 700 nm; position end figures 25s.17,
03".9; image posted at http://www.flickr.com/photos/43846774@N02/6805173999/).
N. Morrell, Las Campanas Observatory; J. Anderson,
Universidad de Chile; G. Pignata, Universidad
Andres Bello; and G. Folatelli, Kavli IPMU, University
of Tokyo, on behalf of the Millenium Center for
Supernova Science and Carnegie Supernova Project
collaboration, report on optical spectroscopy
(range 370-940 nm) obtained on Mar. 2 UT with
the 6.5-m Magellan II Clay telescope (+ LDSS3).
The data were cross-correlated with a library
of supernova spectra using the Supernova Identification
Code (SNID; Blondin and Tonry 2007, Ap.J. 666,
1024), indicating that PSN J15222512-3812042 =
SN 2012ba is a type-Ic supernova past maximum
light. SNID provides an average age of +15 days,
with an uncertainty of 17 days. Considering that
the time of discovery was Jan. 21, the most probable
age is greater than two weeks after maximum. Strong
nebular emission from an underlying H II region
at the redshift of the host galaxy is present
in the spectrum, as well as Na I absorption from
the host with an equivalent width of 0.1 nm. Based
on the distance modulus provided by the NASA/IPAC
Extragalactic Database (Koribalski et al. 2004,
A.J. 128, 16) and the reported discovery magnitude
of 15.9, the absolute brightness at discovery
was magnitude -18.5; the latter is an upper limit
to the intrinsic luminosity, considering the correction
for dust extinction. Depending on the phase of
discovery, this could have been a very luminous
event.
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 March 21 (CBET 3058)
Daniel W. E. Green
Descubierta
el 21/01/2012, Magnitud
16.6.
Encontrada en ESO 328-46,
R. A. = 15h22m25s.12, Decl.
= -38°12'04".2.
Localización 7".3 Este
y 6".3 Sur del centro
de ESO 328-46.
Tipo Ic. PGC 54877.
Electronic Telegram No. 2998
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012R in ESO 385-12.
G. Pignata, M. Cifuentes, Y. Apostolovski,
and M. Vidal, Universidad Andres Bello; J. Maza,
M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier,
F. Forster, S. Silva, F. Carrasco, P. Sanchez,
C. Hervias, and R. Ramirez, Universidad de Chile;
C. Farias and F. Aros, Pontificia Universidad
Catolica de Chile; B. Conuel, Wesleyan University;
G. Folatelli, IPMU, University of Tokyo; and D.
Reichart, K. Ivarsen, J. Haislip, A. Crain, D.
Foster, M. Nysewander, and A. LaCluyze, University
of North Carolina at Chapel Hill, on behalf of
the CHASE project (which is part of the Millennium
Center for Supernova Science collaboration), report
the discovery of an apparent supernova (mag approximately
17.2) on an unfiltered image taken on Jan. 5.32
UT with the 0.41-m 'PROMPT 4' telescope located
at Cerro Tololo. The new object is located at
R.A. = 14h21m14s.21 +/- 0".2, Decl. = -36°13'10".7
+/- 0".2 (equinox 2000.0), which is about 16".4
west and 25".0 north of the center of the galaxy
ESO 385-12. The variable was designated PSN J14211421-3613107
when it was posted at the Central Bureau's TOCP
webpage and is here designated SN 2012R based
on the spectroscopic confirmation reported below.
Additional CCD magnitudes for 2012R (unfiltered
unless noted otherwise): 2010 Jan. 22.34-2011
June 11.08, [20.0 (CHASE; stack of eleven 80-s
images); 2011 June 11.08, [18.5 (CHASE); 2012
Jan. 7.30, 17.1 (CHASE); 11.753, R = 18.2 (Joseph
Brimacombe, Cairns, Australia; 44-cm telescope
+ U16 camera + red filter; position end figures
14s.24, 10".6). An image taken by Brimacombe on
2012 Jan. 8.769 with a 41-cm RCOS telescope (+
STL6K camera + infrared filter; range > 700 nm)
yields position end figures 14s.25, 10".8; his
image is posted at http://www.flickr.com/photos/43846774@N02/6663127901/.
N. Morrell, Las Campanas Observatory, on behalf
of the Carnegie Supernova Project, reports that
optical spectroscopy (range 430-1000 nm), obtained
on 2012 Jan. 16 UT with the 6.5-m Magellan I (Baade)
telescope (+ IMACS), shows that PSN J14211421-3613107
= SN 2012R is an evolved type-II supernova. SNID
(Blondin and Tonry, 2007, Ap.J. 666, 1024) gives
good matches with a number of type-II-P events
between 1 and 2 months after maximum.
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 January 26 (CBET 2998)
Daniel W. E. Green
Descubierta
el 05/01/2012,
Magnitud 17.2.
Encontrada en ESO 385-012,
R.A. = 14h21m14s.21, Decl. = -36°13'10".7.
Localización 16".0 Este
y 25".0 Norte del
centro de ESO 385-12.
Tipo II. PGC 51289.
Electronic Telegram No. 2994
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012Q in ESO 366-18.
J. Maza, M. Hamuy, R. Antezana,
L. Gonzalez, R. Cartier, F. Forster, S. Silva,
F. Carrasco, P. Sanchez, C. Hervias, and R. Ramirez,
Universidad de Chile; G. Pignata, M. Cifuentes,
Y. Apostolovski, and M. Vidal, Universidad Andres
Bello; C. Farias and F. Aros, Pontificia Universidad
Catolica de Chile; B. Conuel, Wesleyan University;
G. Folatelli, IPMU, University of Tokyo; and D.
Reichart, K. Ivarsen, J. Haislip, A. Crain, D.
Foster, M. Nysewander, and A. LaCluyze, University
of North Carolina at Chapel Hill, on behalf of
the CHASE project (which is part of the Millennium
Center for Supernova Science collaboration), report
the discovery of an apparent supernova (mag approximately
17.0) on unfiltered images taken on Jan. 14.13
and 16.13 UT with the 0.41-m 'PROMPT 3' telescope
located at Cerro Tololo. The new object is located
at R.A. = 6h46m26s.64 +/- 0".2, Decl. = -36°53'13".4
+/- 0".2 (equinox 2000.0), which is about 0".6
east and 1".6 north of the center of the galaxy
ESO 366-18. Nothing is visible at this position
on archival images taken on 2011 Nov. 6.16 (limiting
mag 18.0) or in a stack of thirteen 80-s images
taken between 2011 Jan. 8.12 and Nov. 5.16 (limiting
mag 20.1). The variable was designated PSN J06462664-3653134
when it was posted at the Central Bureau's TOCP
webpage and is here designated SN 2012Q based
on the spectroscopic confirmation reported below.
N. Elias-Rosa, Institut de Ciencies de l'Espai,
Consejo Superior de Investigaciones Cientificas;
and G. Pignata, Universidad Andres Bello, on behalf
of a larger collaboration, report that a spectrum
of PSN J06462664-3653134 = SN 2012Q, obtained
on Jan. 22.21 UT with the European Southern Observatory's
New Technology Telescope (+ EFOSC2; range 365-930
nm; resolution 1.8 nm), shows it to be a type-Ic
supernova. The best fit to this spectrum found
by GELATO (Harutyunyan et al. 2008, A.Ap. 488,
383; available at website URL https://gelato.tng.iac.es/login.cgi)
suggests that PSN J06462664-3653134 is similar
to the type-Ic supernova 1996bx at a couple of
weeks after explosion, if a redshift of 0.031669
for the host galaxy (Theureau et al. 1998, A.Ap.
Suppl. 130, 333; via NED) is assumed. The overall
shape of the continuum is very red, implying that
the supernova is heavily extinguished [E(B-V)
about 0.8] by dust. In addition, the spectrum
shows a strong, narrow Na I D absorption at the
velocity of the host galaxy with an equivalent
width of 0.46 nm. The Schlegel et al. (1998, Ap.J.
500, 525) dust maps indicate a value for Galactic
reddening of E(B-V) = 0.146 mag.
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 January 25 (CBET 2994)
Daniel W. E. Green
Descubierta
el 14/01/2012, Magnitud
17.0.
Encontrada en ESO 366-18,
R.A. = 6h46m26s.64, Decl. = -36°53'13".4.
Localización 0".6 Este
y 1".6 Norte del centro
de ESO 366-18.
Tipo Ic. PGC 19577.
Electronic Telegram No. 2984
Central Bureau for Astronomical
Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory,
Cambridge,MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVA 2012H in IC 411.
G. Pignata, M. Cifuentes, Y. Apostolovski,
and M. Vidal, Universidad Andres Bello; J. Maza,
M. Hamuy, R. Antezana, L. Gonzalez, R. Cartier,
F. Forster, S. Silva, F. Carrasco, P. Sanchez,
C. Hervias, and R. Ramirez, Universidad de Chile;
C. Farias and F. Aros, Pontificia Universidad
Catolica de Chile; B. Conuel, Wesleyan University;
G. Folatelli, IPMU, University of Tokyo; and D.
Reichart, K. Ivarsen, J. Haislip, A. Crain, D.
Foster, M. Nysewander, and A. LaCluyze, University
of North Carolina at Chapel Hill, on behalf of
the CHASE project (which is part of the Millennium
Center for Supernova Science collaboration), report
the discovery of an apparent supernova (mag approximately
16.7) on an unfiltered image taken on Jan. 10.16
UT with the 0.41-m 'PROMPT 3' telescope located
at Cerro Tololo. The new object is located at
R.A. = 5h20m14s.94 +/- 0".2, Decl. = -25°18'56".4
+/- 0".2 (equinox 2000.0), which is about 49".7
west and 31".6 north of the center of the galaxy
IC 411. The variable was designated PSN J05201494-2518563
when it was posted at the Central Bureau's TOCP
webpage (because Pignata gave a slightly different
position when posting there) and is here designated
SN 2012H based on the spectroscopic confirmation
reported below. Additional CCD magnitudes for
2012H (unfiltered unless noted otherwise): 2011
Jan. 6.12-Oct. 11.30, [19.5 (stacked CHASE images);
Nov. 3.13, [18.0 (CHASE); 2012 Jan. 11.08, 16.5
(CHASE); 14.232, 16.7 (Joseph Brimacombe, Cairns,
Australia; remotely using a 51-cm RCOS telescope
+ STL11K camera + luminance filter at the New
Mexico Skies Observatory near Mayhill, NM, U.S.A.;
position end figures 14s.93, 56".6; image posted
at website URL http://www.flickr.com/photos/43846774@N02/6697768647/);
14.264, 17.1 (L. Elenin, Lyubertsy, Russia; three
stacked 300-s images remotely taken at the ISON-NM
Observatory near Mayhill with a 0.45-m f/2.8 telescope
+ KAF09000 CCD; limiting mag about 20.1; position
end figures 14s.94, 56".1, uncertainty given as
+/- 0".1; UCAC3 reference stars; image posted
at website URL http://spaceobs.org/images/TOCP/PSNJ05201494-2518563-20120114.png).
M. R. Drout, D. Milisavljevic, E. Berger, N. Sanders,
and A. M. Soderberg, Harvard University, report
on low-dispersion spectra (range 330-850 nm) taken
on Jan. 19 UT with the 6.5-m MMT (+ Blue Channel).
PSN J05201494-2518563 = SN 2012H is a type-Ia
supernova near maximum light. Comparison with
a library of supernova spectra using the "Supernova
Identification" tool (SNID; Blondin and Tonry
2007, Ap.J., 666, 1024) provides a good match
with supernova 1994D at three days after maximum.
Using the host galaxy (IC 411) redshift of z =
0.03185 (da Costa et al. 1991, Ap.J. Suppl. 75,
935), the velocity of the Si II 635.5-nm feature
is estimated to be approximately 11000 km/s.
NOTE: These 'Central Bureau Electronic Telegrams'
are sometimes superseded by text appearing later
in the printed IAU Circulars.
(C) Copyright 2012 CBAT 2012 January 20 (CBET 2984)
Daniel W. E. Green
Descubierta
el 01/01/2012,
Magnitud 16.7.
Encontrada en IC
411 ,
R.A.
= 5h20m14s.94, Decl. = -25°18'56".4.
Localización 49".7 Oeste
y 31".6 Norte del
centro de IC 411 .
Tipo Ia. PGC
17130 .