[IAUC] CBET 2836: 20110929 : SUPERNOVA 2011gd IN NGC 6186 = PSN J16342567+2132284
quai en eps.harvard.edu
quai en eps.harvard.edu
Jue Sep 29 01:13:43 ART 2011
Electronic Telegram No. 2836
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University;
20 Oxford St.; Cambridge, MA 02138; U.S.A.
e-mail: cbatiau en eps.harvard.edu (alternate cbat en iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network
SUPERNOVA 2011gd IN NGC 6186 = PSN J16342567+2132284
Further to CBET 2772, S. B. Cenko, W. Li, and A. V. Filippenko report the
LOSS discovery of an apparent supernova on unfiltered KAIT images:
SN 2011 UT R.A. (2000.0) Decl. Mag. Offset
2011gd Aug. 28.16 16 34 25.67 +21 32 28.4 18.7 2".9 E, 0".9 N
This variable was designated PSN J16342567+2132284 when it was posted on the
Central Bureau's TOCP webpage and is here designated SN 2011gd based on the
spectroscopic report below. Additional KAIT magnitudes for 2011gd: a co-
added image from July 2011, [20.1; Sept. 3.15 UT, 17.5.
J. M. Silverman, S. B. Cenko and A. V. Filippenko, University of
California, Berkeley, report that inspection of a CCD spectrum (range 340-1000
nm), obtained on Sept. 26 UT with the 10-m Keck I telescope (+ LRIS), shows
that PSN J16342567+2132284 = SN 2011gd is a significantly reddened, but
otherwise normal, type-Ib supernova. The host-galaxy recession velocity, as
determined from narrow emission lines, is about 2800 km/s.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2011 CBAT
2011 September 29 (CBET 2836) Daniel W. E. Green
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