Classification of PSN J20065788-5625312 as a Type Ia SN near max with WiFeS
ATel #5239; M. Childress, R. Scalzo, F. Yuan, B. Schmidt (Australian National University), B. Tucker (ANU, UC Berkeley)
on 31 Jul 2013; 16:21 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 J20065788-5625312 as a SN Ia near max based on a 40 minute spectrum obtained 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 J20065788-5625312 was discovered by Peter Marples and Greg Bock on 2013 July 31.51 at 17.4 mag, and our spectrum with WiFeS on 2013 July 31.64 indicates it is a Type Ia around maximum light. Classification with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) shows best match to SN 1994D at -2 days at a redshift of 0.050 +- 0.006, consistent with the redshift of the apparent host galaxy 2MASX J20065644-5625175 (z=0.051946, Jones et al., 2009, MNRAS, 399, 683). Clear SN Ia signatures include Si II 6355 at a rest frame velocity of 12,000 km/s (using host redshift), Si II 5972, the S II "W", O I 7700, Ca H/K, and the Ca II NIR triplet.
Name | RA (J2000) | Dec (J2000) | Disc. Date | Disc. Source | Disc Mag | z | Type | Phase | Notes
PSN J20065788-5625312 | 20 06 57.88 | -56 25 31.2 | 20130731 | Marples, Bock | 17.4 | 0.050 | Ia | -2 |
