PESSTO spectroscopic classification of optical transients

ATel #8255; M. Dennefeld (IAP), J. Harmanen (Turku, NOT), T. Kangas, S. Mattila (Turku), L. Galbany (MAS, DAS), K. Maguire (QUB), M. Fraser (Cambridge), C. Inserra, E. Kankare (QUB), I. Manulis (Weizmann), S. J. Smartt, K. W. Smith (QUB), M. Sullivan (Southampton), S. Valenti (LCOGT), O. Yaron (Weizmann), D. Young, D. Wright (QUB), K. Chambers, H. Flewelling, M. Huber, E. Magnier, J. Tonry, C. Waters, R. J. Wainscoat (IfA, Univ. Hawaii), L. Wyrzykowski (Warsaw Observatory, Poland)
on 8 Nov 2015; 17:02 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Tuomas Kangas (tjakan@utu.fi)

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PESSTO, the Public ESO Spectroscopic Survey for Transient Objects (see Smartt et al. 2015, A&A, 579, 40 http://www.pessto.org ), reports the following supernova classifications. Targets were supplied by Pan-STARRS Survey for Transients (see Huber et al., ATel #7153) and OGLE-IV Real-time Transient Search (Wyrzykowski et al., 2014 arxiv:1409.1095; http://ogle.astrouw.edu.pl/ ) (see below). All observations were performed on the ESO New Technology Telescope at La Silla on 2015 Nov. 7, using EFOSC2 and Grism 13 (3985-9315Å, 18Å 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
 
 PS15crs  | 21 23 30.80 | -07 44 47.8 |  20151029  |     PSST     |   19.71   | 0.028 |  II   | ~0d   | (1)  
 PS15crp  | 01 22 24.74 | -13 47 35.0 |  20151029  |     PSST     |   17.83   | 0.047 |  Ia   | +7d   | (2)  
 PS15coo  | 02 59 30.75 | -08 13 10.5 |  20151028  |     PSST     |   18.26   | 0.030 |  Ia   | 30d   | (3)  
 OGLE15om | 03 19 00.00 | -64 40 40.2 |  20151022  |     OGLE     |   20.10   | 0.100 |  Ia   | +7d   | (2)  
  

(1) Blue continuum with broad H and He emission lines; consistent with a young type II SN. Matches SN 2005cs at 2 d before maximum.
(2) Normal Ia around a week after maximum.
(3) Best matches to Ia around a month after maximum. Some host galaxy contamination. Redshift from narrow host galaxy H alpha line.