SUPERNOVA 2009lp
G. Pignata, Universidad Andres Bello; J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, P. Gonzalez, P. Lopez, S. Silva, G. Folatelli, D. Iturra, R. Cartier, F. Forster, S. Marchi, and A. Rojas, Universidad de Chile; B. Conuel, Wesleyan University; 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, report the discovery of an apparent supernova (mag approximately 16.5 +/- 0.3) on an unfiltered image taken on Nov. 17.32 UT with the 0.41-m 'PROMPT 3' telescope located at Cerro Tololo. The new object, which is also present in images taken on Nov. 19.29 (at mag approximately 16.5) and 20.29 (at mag approximately 16.8), is located at R.A. = 10h37m28s.45 +/- 0".1, Decl. = -27°39'18".9 +/- 0".1 (equinox 2000); no obvious host galaxy is visible close to this position. Nothing is visible at the position of 2009lp on archival images taken on Jan. 22.20 (limiting mag 19.0) and June 3.10 (limiting mag 18.0).
M. Stritzinger, Las Campanas Observatory and Dark Cosmology Centre; and G. Folatelli, Universidad de Chile, on behalf of the Millennium Center for Supernova Science, report that they obtained an optical spectrum of 2009lp on Nov. 22.2 UT with the Gemini telescope (+ GMOS). The spectrum reveals that 2009lp is a type-Ia supernova. Comparison with a library of spectra via the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2009lp is most nearly similar to supernova 1986G about 45 days past maximum; SNID also suggests a redshift of z = 0.015.

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars.

2009 November 19

(C) Copyright 2009 CBAT (CBET 2037)

Daniel W. E. Green