Spectroscopic Classification of LSQ13apt (=PSN J22103421-2239480) with WiFeS
ATel #5100; M. Childress, R. Scalzo, B. Tucker, F. Yuan, B. Schmidt (Australian National University), E. Hadjiyska, E. S. Walker, D. Rabinowitz, C. Baltay, N. Ellman, R. McKinnon, (Yale University), P. Nugent (LBL), U. Feindt, M. Kowalski (U. Bonn)
on 4 Jun 2013; 07:07 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Michael Childress (mjc@mso.anu.edu.au)
Subjects: Optical, Supernovae
We report the spectroscopic classification of LSQ13apt (=PSN J22103421-2239480) with the Wide Field Spectrograph (WiFeS - Dopita et al., 2007, ApSS, 310, 255) on the ANU 2.3m telescope at Siding Spring Observatory, NSW Australia, using the B3000/R3000 gratings (3500-9800 A, 1 A resolution). LSQ13apt was discovered on 2013 May 29 by the La Silla Quest Survey (see Hadjiyska et al., ATel #3812) and on 2013 May 31 by Berto Monard. A 40 minute spectrum of the SN shows cler signatures of the Type Ia supernova, with Si II 6355, Ca II H&K and the IR triplet, and Fe II lines near 5000 A. Classification with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) shows good matches to normal SNe Ia at maximum light at a mean redshift of 0.034 +- 0.006, consistent with the redshift of the putative host galaxy ESO 532-25 (z=0.031465 - Da Costa et al., 1991, ApJS, 75, 935). Given this host redshift, we calculate the velocity of the absorption minimum of the Si II 6355 line to be at 10,300 km/s.
Name | RA (J2000) | Dec (J2000) | Disc. Date | Disc. Source | Disc Mag | z | Type | Phase | Notes
LSQ13apt | 22 10 34.21 | -22 39 48.0 | 20130529 | LSQ, Monard | 17.4 | 0.034 | Ia | +0 | (1)
Discovered as PSN J22103421-2239480 by Monard on 2013 May 31
