SUPERNOVA
2011ii IN PGC 20555 = PSN J07163408-3829038
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
17.6) on an unfiltered CCD image taken on Nov. 15.31
UT with the 0.41-m 'PROMPT 5' telescope located at
Cerro Tololo. The new object is located at R.A. =
7h16m34s.08 +/- 0".2, Decl. = -38°29'03".8 +/- 0".2
(equinox 2000.0), which is about 12".0 west and 11".2
north of the center of the galaxy ESO 310-6 = PGC
20555. The variable was designated PSN J07163408-3829038
when it was posted at the Central Bureau's TOCP webpage
and is here designated SN 2011ii. Additional approximate
CCD magnitudes for 2011ii: Oct. 7.33, [18.5 (CHASE);
Nov. 16.21, 17.0 (CHASE); 22.537, 16.8 (J. Brimacombe,
Cairns, Australia; infrared filter; bandpass > 700
nm; position end figures 34s.03, 04".5). Brimacombe's
image is posted at the following website URL: http://www.flickr.com/photos/43846774@N02/6386159609/.
F. Bufano, Istituto Nazionale di Astrofisica (INAF),
Osservatorio Astronomico di Catania; S. Benetti, A.
Pastorello, and S. Valenti, INAF, Osservatorio Astronomico
di Padova; and G. Pignata, Universidad Andres Bello,
on behalf of a larger collaboration, report that a
noisy spectrum of PSN J07163408-3829038 = SN 2011ii,
obtained on Nov. 17.27 UT with the New Technology
Telescope (+ EFOSC2; range 360-930 nm; resolution
1.7 nm), shows it to be a type-Ib supernova. A comparison
of the observed spectrum with a library of supernova
spectra using the "GELATO" code (Harutyunyan et al.
2008, A.Ap. 488, 383; available at URL https://gelato.tng.iac.es/login.cgi)
suggests that 2011ii is around maximum light.
NOTE: These 'Central Bureau Electronic
Telegrams' are sometimes superseded by text appearing
later in the printed IAU Circulars.