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Classification of two supernovae with WiFeS

ATel #8384; I. Seitenzahl, B. Tucker, B. Zhang, R. Scalzo, F. Yuan, A. Ruiter, B. Schmidt (Australian National University), M. Childress (University of Southampton)
on 8 Dec 2015; 13:12 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 two supernovae 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). Discovery and classification information are found in the table below, the targets were observed on 2015 Dec 07, and classifications were made with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
 Name                          | RA (J2000)   | Dec (J2000)  | Disc. Date | Disc Mag  | Disc. Source    | SNID z | Type    |  Phase | Match SN  | Notes
PSNJ21505094-7020289 | 21:50:50.94 | -70:20:28.9 | 20151127 | 14.5 | MASTER | 0.012 | Ia | -1 | SN 2002er | (1) PSNJ05140624-1037300 | 05:14:06.24 | -10:37:30.0 | 20151206 | 18.0 | LOSS | 0.008 | II | young | -- | (2)

Notes:

(1) Also named MASTER OT J215050.94-702028.9. Consistent with redshift of host galaxy NGC 7213 (z=0.012335, da Costa et al. 1991, ApJS, 75, 935). We note very a strong absorption at 5962/5968 A, consistent with the sodium doublet at the host redshift.

(2) Clear young type II SN with blue continuum and Balmer lines in P-Cygni. Redshift of Balmer lines consistent with redshift of host galaxy NGC 1843 (z=0.008683, Koribalski et al. 2004, AJ, 128, 16).