[IAUC] CBET 2837: 20110929 : SUPERNOVA 2011ge IN UGC 11253 = PSN J18294090+2304010

quai en eps.harvard.edu quai en eps.harvard.edu
Jue Sep 29 01:30:07 ART 2011


                                                  Electronic Telegram No. 2837
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 2011ge IN UGC 11253 = PSN J18294090+2304010
     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
 2011ge   Sep. 21.14   18 29 40.90  +23 04 01.0   19.5    17".4 E, 5".4 S

This variable was designated PSN J18294090+2304010 when it was posted on the
Central Bureau's TOCP webpage and is here designated SN 2011ge based on the
spectroscopic report below.  Additional KAIT magnitudes for 2011ge:  a co-
added image from Aug. 2011, [20.5; Sept. 23.15 UT, 19.4.  Joseph Brimacombe,
Cairns, Australia, has posted an unfiltered CCD image that he took on Sept.
27.199 at website URL http://www.flickr.com/photos/43846774@N02/6193373952/.

     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 J18294090+2304010 = SN 2011ge is a highly reddened type-II supernova.
After removal of the host-galaxy recession velocity of 4000 km/s, determined
from narrow emission features, the absorption minimum of the H-alpha line is
found to be blueshifted by about 17200 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      superseded by text appearing later in the printed IAU Circulars.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 2837)              Daniel W. E. Green



Más información sobre la lista de distribución Iauc