Optical Spectroscopy of CSS080924:040630+145214
ATel #1801; J. M. Silverman, B. E. Cobb, M. McCourt, and A. V. Filippenko
on 22 Oct 2008; 17:43 UT
Credential Certification: Alexei V. Filippenko (alex@astro.berkeley.edu)
Subjects: Optical, Supernovae, Transient
We report on observations of the CSS transient CSS080924:040630+145214 first
announced by Mahabal et al. (ATEL #1778). We obtained an optical spectrum
(range 3450-6400 Angstroms) on October 22.42 UT using the Kast spectrograph on
the Lick 3-m telescope. The spectrum shows that the transient is a type-Ia
supernova, about a month past maximum brightness. Cross-correlation with a
library of supernova spectra using the "SuperNova IDentification" code (SNID;
Blondin & Tonry 2007, Ap.J. 666, 1024) indicates that it is most similar to the
type-Ia SN 1994M at 34 days past maximum.
