Electronic Telegram No. 1968
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVAE 2009jq AND 2009jr
     J. M. Silverman, M. T. Kandrashoff, and A. V. Filippenko, University of
California, Berkeley, report that inspection of CCD spectra (range 340-1000
nm), obtained on Oct. 12 UT with the 3-m Shane reflector (+ Kast) at Lick
Observatory, shows that 2009jq (CBET 1963) is a type-II supernova; cross-
correlation with a library of supernova spectra using the "SuperNova
IDentification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024)
indicates that it is spectroscopically similar to the peculiar type-II
supernova 2006tf at 32 days after discovery (Smith et al. 2008, Ap.J. 686,
467), though SN 2006tf was far more luminous.  SN 2009jr (CBET 1964) is a
type-Ia supernova; cross-correlation with SNID indicates that it is roughly
one week before maximum brightness; after removal of the host-galaxy recession
velocity of 5100 km/s (from narrow emission features), the absorption
minimum of the Si II 635.5-nm line is found to be blueshifted by about 13000
km/s.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 October 12                  (CBET 1968)              Daniel W. E. Green