PESSTO spectroscopic classification of optical transients

ATel #5453; R. Kotak (Queen's Uni. Belfast)
on 8 Oct 2013; 16:10 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Rubina Kotak (r.kotak@qub.ac.uk)

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E. Reilly, C. Inserra, T.-W. Chen, J. Polshaw (QUB), A. Pastorello (INAF - Padova), A. De Cia (Weizmann), C. Baltay, N. Ellman, E. Hadjiyska, R. McKinnon, D. Rabinowitz, E. S. Walker (Yale University), U. Feindt, M. Kowalski (Universitat Bonn), P. Nugent (LBL Berkeley), S. Benetti (INAF - Padova Astronomical Observatory), S. Valenti (LCOGT/UCSB), S. Taubenberger (MPA Garching), S. J. Smartt, K. Smith, D. Young (Queen's University Belfast), M. Fraser (University of Cambridge), M. Sullivan (University of Southampton), A. Gal-Yam, O. Yaron (Weizmann Institute for Science)

PESSTO, the Public ESO Spectroscopic Survey for Transient Objects (see Valenti et al., ATel #4037; http://www.pessto.org ), reports the following supernova classifications. Targets were supplied by the La Silla-Quest survey (see Hadjiyska et al., ATel #3812). All observations were performed on the ESO New Technology Telescope at La Silla on 2013 October 08 (UT), 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 (Yaron & Gal-Yam, 2012, PASP, 124, 668).

 
Name              | RA (J2000)  | Dec (J2000)  | Disc. Date | Disc.Source | Disc Mag  |  z     | Type  | Phase                | Notes 
 
LSQ13cjy          | 01:38:36.46 | -19:29:35.9  | 2013-09-26 |   LSQ       |  20.14    | ~0.07  | SN Ia | ~few days before max | (1) 
LSQ13cnl          | 00:14:56.20 | 30:33:28.1   | 2013-09-29 |   LSQ       |  20.07    | ~0.065 | SN Ia | at maximum           | (2) 
LSQ13cms          | 03:43:41.94 | -31:53:43.9  | 2013-09-25 |   LSQ       |  19.92    | ~0.13  | SN Ia | ~few days before max | (3) 

(1) A normal SN type Ia a few days before maximum, with good fits to SNe 1994S and 2006cj

(2) A SN 1991T-like type Ia. Best matches with SNe 1998es and 2006cz

(3) A SN 1991T-like type Ia. Best matches to SNe 1999gp and 1999dq at ~5 days before maximum. However, the LSQ light curve suggests the SN is at maximum.