Electronic Telegram No. 2488
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 2010ib
     A. Gal-Yam, Weizmann Institute of Science; D. A. Howell, University of
California at Santa Barbara and Las Campanas Observatory; S. B. Cenko and J. S.
Bloom, University of California at Berkeley; M. M. Kasliwal and S. R. Kulkarni,
California Institute of Technology (CIT); N. M. Law, University of Toronto;
and E. O. Ofek and R. M. Quimby, CIT, report the independent discovery of SN
2010ib (cf. CBET 2464) by the "Palomar Transient Factory" (PTF) group.  The
supernova (referred to by the PTF group as PTF10qob) was initially detected
at R-band magnitude 19.1 via the Palomar 1.2-m Oschin Schmidt telescope on
Aug. 4.38 UT, though no object is visible at the position of 2010ib on an
image obtained on July 24.47 (limiting magnitude 20.1).
     CCD spectra (range 350-900 nm) of 2010ib were obtained on Aug. 6 UT with
the Gemini Multi-Object Spectrograph mounted on the 8-m Gemini South telescope.
Matches to template spectra using "Superfit" indicate that 2010ib is a type-II
supernova with strong P-Cyg profiles clearly visible in the Balmer series.
Using superimposed narrow emission lines, a redshift of z = 0.0187 was
measured for the presumed host galaxy, consistent with archival (NED) values
for the nearby Minkowski object.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2010 CBAT
2010 October 10                  (CBET 2488)              Daniel W. E. Green