ROTSE3 J133033.0-313427 is a Type Ia Supernova
ATel #2480; R. M. Quimby (Caltech)
on 15 Mar 2010; 23:51 UT
Credential Certification: Robert Quimby (quimby@astro.as.utexas.edu)
Subjects: Optical, Supernovae, Transient
A spectrum (340-760 nm) of ROTSE3 J133033.0-313427 (Zheng et al., ATel
#2468) obtained on Mar 14.58 UT with the 10-m Keck I (+ Low Resolution
Imaging Spectrometer) shows it to be a normal Type Ia supernova. The
spectra are similar to SN 1992A a few days after maximum light
(Kirshner et al. 1993, ApJ 415,589). Adopting the redshift of the
apparent host (z=0.048; Katgert et al. 1998, A&AS 129, 399), the
expansion velocity derived from the minimum of the SiII (rest 635.5
nm) line is about 12,000 km/s.
