[IAUC] CBET 2630: 20110110 : SUPERNOVAE 2011F AND 2011G

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 2630
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


SUPERNOVAE 2011F AND 2011G
     Further to CBET 2628, S. B. Cenko, W. Li, and A. V. Filippenko report the
discovery by the Lick Observatory Supernova Survey of two apparent supernova
on unfiltered KAIT images; A. Narla was also involved with the discovery of
2011F.

 SN       2011 UT       R.A. (2000.0) Decl.      Mag.      Offset
 2011F    Jan. 7.60   12 37 57.35  +34 01 09.0   18.7    20".1 E, 10".2 S
 2011G    Jan. 8.58   12 09 41.81  +56 31 11.4   19.3    28".3 W, 13".0 S

Additional KAIT magnitudes for 2011F in UGC 7799:  a co-added frame from
May-June 2010, [20.1, 2011 Jan. 8.57 UT, 18.9.  Additional KAIT magnitudes for
2011G in UGC 7144:  a co-added frame from May-June 2010, [20.5; 2011 Jan.
9.53, 18.7.

     G. Narayan and R. Kirshner, Harvard-Smithsonian Center for Astrophysics,
report that a spectrum of 2011G was obtained at the MMT on Jan. 10 UT with
the Red Channel spectrograph (range 320-830 nm).  Analysis of the spectrum
with SNID (Blondin and Tonry 2007) shows that 2011G is a type-Ia supernova
about 40 days past maximum light.  A similar spectrum of 2011F, analyzed with
SNID, shows that it is a type-II supernova, about 10 days past maximum.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 January 10                  (CBET 2630)              Daniel W. E. Green