PSN J11290437+1714095 is a Type Ia supernova (91T-like) near maximum light
ATel #5656; M. Childress, C. Owen, R. Scalzo, F. Yuan, B. Schmidt (Australian National University), B. Tucker (Australian National University and University of California Bekerley)
on 13 Dec 2013; 01:25 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Michael Childress (mjc@mso.anu.edu.au)
Subjects: Optical, Supernovae
We report spectroscopic classification of PSN J11290437+1714095 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). PSN J11290437+1714095 was discovered by TAROT on 2013 Dec 11.09 at mag 15.9 in UGC 6483. A 20 minute spectrum of the SN on 2013 Dec 12.72 shows this to be a Type Ia supernova of the SN 1991T subclass near maximum light. Classification with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) shows good matches to SN 1999ac and SN 1999aa, both at -2 days with respect to maximum light. The preferred redshift from SNID is about 0.012, consistent with the redshift of the apparent host galaxy (z = 0.012989; Giovanelli, Avera, & Karachentsev, 1997, AJ, 114, 122). Given this host redshift, we measure the Si 6355 absorption velocity minimum to be 9,100 km/s.
Name | RA (J2000) | Dec (J2000) | Disc. Date | Disc. Source | Disc Mag | z | Type | Phase | Notes
PSN J11290437+1714095 | 11 29 04.37 | +17 14 09.5 | 20131211 | TAROT | 15.9 | 0.012 | Ia | -2 |
