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PESSTO spectroscopic classification of optical transients

ATel #4860; Matt Nicholl (Queen's University Belfast), Nic Walton, Nadia Blagorodnova (IoA, Cambridge), Cosimo Inserra, Morgan Fraser, Joe Polshaw (Queen's University Belfast), S. Benetti, A. Pastorello, (INAF - Padova Astronomical Observatory), S. Valenti (LCOGT/UCSB), S. Taubenberger (MPA Garching), S. J. Smartt, K. Smith, D. Young (Queen's University Belfast), M. Sullivan (University of Southampton), A. Gal-Yam, O. Yaron (Weizmann Institute for Science)
on 5 Mar 2013; 15:54 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Cosimo Inserra (c.inserra@qub.ac.uk)

Subjects: Optical, Supernovae

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 Tsinghua University - NAOC Transient Survey, the Catalina Real-time Transient Survey (http://crts.caltech.edu/) and the OGLE-IV Transient Search (see Wyrzykowski et al., ATEL #4495). All observations were performed on the ESO New Technology Telescope at La Silla on 2013 March 4, 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
 
PSN J12533306+2742517    |  12 53 33 06 | +27 42 51.7 | 20130303   | TNTS          | 19.2      | 0.092 | Ia     | -3d       |  
PSN J12582492+1235533    |  12 58 24.92 | +12 35 53.3 | 20130218   | TNTS          | 19.5      | 0.094 | Ia     | ~1-2weeks | 
MLS130302:110652+104026  |  11 06 51.54 | +10 40 26.0 | 20130302   | CRTS          | 18.8      | 0.126 | Ia     | ~10d      | 91-T like 
OGLE2013-SN-016          |  05 13 52.78 | -60 09 26.9 | 20130301   | OGLE          | 18.8      | 0.074 | IIn    |  ~peak    | (1)

(1) OGLE2013-SN-016 has narrow (FWHM ~2000 km/s) Balmer lines in emission, together with HeI on a blue continuum. Hb seems to have two components while it is not clear if Ha emission profile is due to one or two components.