Classification of A Nearby, Young Type Ia Supernova from the LSQ Survey
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), D. Wright (QUB), T.-W. Chen (QUB), S. Smartt, and A. Lawrence (U. Edinburgh)
We report the spectroscopic classification of an LSQ supernova (see Hadjiyska et al., ATel #3812) at the William Herschel Telescope with ISIS (range 350-900nm).

LSQ13aiz was discovered at an unfiltered magnitude of 15.8 on 12 May 2013. The target was not seen in LSQ images 2 days prior to discovery on the 10 May 2013. The transient was further observed on 14 May 2013 by CRTS (SSS130514:131515-175756) at an unfiltered magnitude of 14.7. A spectrum obtained on 14 May 2013 and fit using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, ApJ, 666, 1024), shows the transient is a young normal Type Ia supernova between two weeks prior to peak and peak luminosity with redshifts in the range 0 - 0.01. The host (ESO 576- G 017) has a measured redshift of 0.009240, giving the absolute magnitude at discovery of -17.0, supporting a phase of 14 to 10 days before maximum light.
optical,supernovae,transient