CSP (du Pont) Classification of a Type Ia SN LSQ13ccg
ATel #5365; E. S. Walker (Yale), E. Hadjiyska (Yale), D. Rabinowitz (Yale), C. Baltay (Yale), N. Ellman (Yale), R. McKinnon (Yale), U. Feindt (U. Bonn), P. Nugent (LBNL/UCB), N. Morrell (LCO), J. Prieto (UDP), E. Y. Hsiao (LCO), M. Phillips (LCO)
on 5 Sep 2013; 01:10 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Emma Walker (emma.walker@yale.edu)
Subjects: Optical, Supernovae, Transient
We report the classification of LSQ13ccg (23:03:11.45 +14:41:39.1) as a Type Ia supernova near maximum light. The supernova was first detected by LSQ (La Silla-QUEST - Baltay et al. PASP 125 683) on September 1.1 at V = 19.4 and was followed-up by the Carnegie Supernova Project using the du Pont Telescope with WFCCD on 2013 September 3. The supernova is found to be at z = 0.077. The spectrum also shows strong emission from a nearby HII region in the host at the same redshift. The supernova spectrum contains strong NaI D absorption (E.W. = 2.4 Angstrom), and at the redshift of the host the minimum of the SiII 6355 Angstrom feature corresponds to a velocity of 10600km/s.
Using SNID (Blondin and Tonry ApJ 666 1024), the supernova most resembles the 91T-like supernova SN1998es at -2 days, but good matches are found to other 91T-like and normal supernovae at maximum light.
