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PESSTO spectroscopic classification of optical transients

ATel #6706; G. Dimitriadis, M. Smith, R. Firth (Southampton), L. Galbany (DAS, MAS), C. Inserra (QUB), K. Maguire (ESO), S. J. Smartt (QUB), K. W. Smith (QUB), M. Sullivan (Southampton), S. Valenti (LCOGT), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann), L. Wyrzykowski (Warsaw Observatory, Poland)
on 16 Nov 2014; 20:57 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Mark Sullivan (m.sullivan@soton.ac.uk)

Subjects: Optical, Supernovae

PESSTO, the Public ESO Spectroscopic Survey for Transient Objects (see Smartt et al., arXiv:1411.0299 http://www.pessto.org ) reports the following supernova classifications. Targets were supplied by the OGLE-IV Real-time Transient Search (Wyrzykowski et al., 2014 http://arxiv.org/abs/1409.1095 http://ogle.astrouw.edu.pl/ ). All observations were performed on the ESO New Technology Telescope at La Silla on 2014-11-15, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) and GELATO (Harutyunyan et al., 2008, A&A, 488, 383). Classification spectra can be obtained from http://www.pessto.org (via WISeREP).

 
Name             | RA (J2000)  | Dec (J2000) | Disc. Date | Disc. Source | Disc Mag |  z    | Type      | Phase | Notes
OGLE-2014-SN-131 | 01 14 00.8 | -77 06 16.4 | 20140907 | OGLE | 21.86 | 0.31 | UNKNOWN | | 1 OGLE-2014-SN-139 | 00 54 43.42 | -67 04 42.2 | 20141028 | OGLE | 20.71 | 0.066 | Ia | +5 d | OGLE-2014-SN-141 | 05 37 18.64 | -75 43 17.0 | 20141111 | OGLE | 21.72 | 0.063 | Ia | -7 d | 2 OGLE-2014-SN-135 | 04 20 39.34 | -71 36 57.0 | 20141103 | OGLE | 21.04 | 0.063 | Ia | +3 d |

Notes: 1. A blue spectrum with emission at 6384A. Possible emission at 8600A. If Halpha and Hbeta, this would be z=0.31. 2. Excellent match to a SN1991T-like SN Ia