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Classification of Two LSQ Supernovae By CSP

ATel #5567; 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), E. Hsiao (LCO), M. Phillips (LCO)
on 9 Nov 2013; 20:50 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Emma Walker (emma.walker@yale.edu)

Subjects: Optical, Supernovae, Transient

We report the discovery by the La Silla-QUEST survey(LSQ; Baltay et al. PASP 125 683) and classification by Carnegie Supernova Project (CSP) of two supernovae, LSQ13cwo and LSQ13cwp. Classifications were made using SNID (Blondin and Tonry, 2007, ApJ, 666, 1024).

Name RA (J2000) Dec (J2000) Disc. Date Disc. Mag z Type Phase Notes
LSQ13cwo 03:10:50.21 -00:21:40.3 2013-11-08 19.4 ? II early 1
LSQ13cwp 04:03:50.66 -02:39:18.0 2013-11-08 19.42 0.054 Ia pre-max 2

1. Only a blue continuum is observed with a hint of broad emission. No host features were seen in the spectrum so the redshift is unknown. There was no detection of the source on 2013-11-06.

2. SNID provides the best match at a lower redshift than catalogue redshift of the nearby large galaxy (2MASX J04035024-0239275 z=0.067 6dF Jones et al. 2009). No host features are observed in the SN spectrum. The best match is SN2002bo at -2days, but SNID also has good matches at a number of phases before maximum light. We note that SN2002bo has high velocity features which may be causing the lower redshift fit.