[IAUC] CBET 2894: 20111103 : SUPERNOVA 2011hg IN UGC 12410

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 2894
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 2011hg IN UGC 12410
     G. H. Marion, Harvard-Smithsonian Center for Astrophysics (CfA), on
behalf of the CfA Supernova Group, reports that a spectrum (range 340-740 nm)
of SN 2011hg (cf. CBET 2887) was obtained on Nov. 2 UT by P. Berlind with the
F. L. Whipple Observatory 1.5-m telescope (+ FAST).  Cross-correlation with a
library of supernova spectra using the "Supernova Identification" code (SNID;
Blondin and Tonry 2007, Ap.J. 666, 1024) shows that 2011hg is a type-IIb
supernova several days before maximum light.  SNID finds that the best fit is
to a template from the type-IIb supernova 2003bg at 7 days before maximum.
In addition to P-Cyg features from the Balmer lines, He I 587.6-nm forms a
clear absorption feature.  Based on a redshift of z = 0.023636 for UGC 12410,
as reported in NED (Giovanelli et al. 1997, A.J. 114, 122), the velocity of
the minimum of the H-alpha absorption is measured to be 14400 km/s and He I
587.6-nm to be 11500.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 November 3                  (CBET 2894)              Daniel W. E. Green