Electronic Telegram No. 2716
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@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


SUPERNOVA 2011cf IN NGC 2939 = PSN J09380828+0931111
     Further to CBET 2702, M. Kandrashoff, K. Lin, 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
 2011cf   Apr. 28.24   9 38 08.28  + 9 31 11.1   18.2    5".9 E, 14".8 S

The new object was designated PSN J09380828+0931111 when posted on the
Central Bureau's TOCP webpage and is here designated SN 2011cf based on the
spectroscopic report below.  Additional KAIT magnitudes for 2011cf:  2010 Apr.
12.21 UT, [19.3; 2011 May 1.17, 18.0.  The type-IIP supernova 2009ao also
appeared in NGC 2939 (cf. CBET 1711).

     J. M. Silverman, W. Li, and A. V. Filippenko, University of California,
Berkeley, report that inspection of a CCD spectrum (range 340-1000 nm),
obtained by G. Canalizo, K. Hiner, and M. Lazarova (University of California,
Riverside) on May 5 UT with the 3-m Shane reflector (+ Kast) at Lick
Observatory, shows that PSN J09380828+0931111 = SN 2011cf is a highly reddened
type-II supernova.  The spectrum shows a red continuum, with the broad H-alpha
emission component greatly dominating over the absorption component.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 May 10                      (CBET 2716)              Daniel W. E. Green