Electronic Telegram No. 1778

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://cfa-www.harvard.edu/iau/cbat.html

SUPERNOVAE 2009do IN MCG +09-21-22

Further to CBET 1759, S. B. Cenko, W. Li, and A. V. Filippenko,
University of California, report the LOSS discovery of an apparent
supernova on unfiltered KAIT images:

 SN       2009 UT        R.A. (2000.0) Decl.      Mag.      Offset
 2009do   Apr. 22.33   12 34 58.35  +50 51 04.4   16.3    9".0 W, 0".4 N

Additional KAIT magnitudes for 2009do in MCG +09-21-22:  Apr. 5.28 UT, [17.4;
23.29, 16.1.

P. Challis, Harvard-Smithsonian Center for Astrophysics (CfA), on
behalf of the CfA Supernova Group, reports that a spectrum (range 360-750 nm)
of 2009do, obtained on Apr. 24 UT by A. Vaz with the F. L. Whipple
Observatory 1.5-m telescope (+ FAST), shows it to be a type-Ia 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 2009do is a normal type-Ia event around maximum brightness.
The redshift, as measured from the supernova features, is about 0.04.

Host galaxy info: vel= 11992 km/s; 0.9 x 0.3; 16.53

SN type info: Ia

------------------------------

Return to KAIT home page