[IAUC] CBET 2640: 20110125 : SUPERNOVA 2011M IN UGC 3218 = PSN J05004155+6214386

quai en eps.harvard.edu quai en eps.harvard.edu
Mie Sep 14 16:19:09 ART 2011


                                                  Electronic Telegram No. 2640
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 2011M IN UGC 3218 = PSN J05004155+6214386
     Further to CBET 2634, L. Jewett, 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
 2011M    Jan. 19.33    5 00 41.55  +62 14 38.6   18.2    14".6 W, 0".6 S

Additional KAIT magnitudes for 2011M:  Jan. 14.30 UT, [19.5; 20.30, 18.0.
This object was listed on the Central Bureau's TOCP webpage with the
provisional designation PSN J05004155+6214386.  R. A. Koff (Bennett, CO,
U.S.A., 25-cm reflector) reports that twenty co-added CCD images taken
on Jan. 22.073 yield mag 17.1 and position end figures 41s.27, 38".3.
The type-Ia supernova 2006le also appeared in UGC 3218 (cf. IAUC 8770).

     J. Parrent, D. A. Howell, R. Ellis, A. Gal-Yam, and P. E. Nugent, on behalf
of the "Palomar Transient Factory" group (http://www.astro.caltech.edu/ptf/),
report that a CCD spectrum (range 350-800 nm) was taken on the Gemini North
telescope on Jan. 22 UT, revealing that SN 2011M = PSN J05004155+6214386 is a
type-Ia supernova.  Comparisons to other spectra using "Superfit" (Howell et al.
2005, Ap.J. 634, 1190) indicate a close match to that of SN 1989B, at five days
before maximum light.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 January 25                  (CBET 2640)              Daniel W. E. Green



Más información sobre la lista de distribución Iauc