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PESSTO spectroscopic classification of optical transients

ATel #4882; Joe Polshaw, Matt Nicholl (Queen's University Belfast), Nadia Blagorodnova, Simon Hodgkin (IoA, Cambridge) Morgan Fraser, Cosimo Inserra (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 13 Mar 2013; 14:29 UT
Credential Certification: Morgan Fraser (mfraser02@qub.ac.uk)

Subjects: Optical, Star, Supernovae, Transient

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 Catalina Real-time Transient Survey (http://crts.caltech.edu/), and the Transient Objects Confirmation Page (http://www.cbat.eps.harvard.edu/unconf/tocp.html). All observations were performed on the ESO New Technology Telescope at La Silla on 2013 March 12, 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
PSNJ11534177-5406168 | 11:53:41.77 | -54:06:16.8 | 20130310 | TOCP | 17.8 | 0.022 | Ic | ~peak | (1) SSS130311:111518-452917 | 11:15:18.01 | -45:29:16.8 | 20130311 | CRTS | 17.9 | 0 | Stellar | - | SSS130304:102431-192214 | 10:24:31.32 | -19:22:13.5 | 20130304 | CRTS | 18.6 | ? | SN? | ? | (2)

(1) Good match with several normal Type Ic SNe such as SN1991A and SN2004aw at or after peak.

(2) Featureless blue continuum. There is a possible weak emission feature (FWHM~50 Ang) at 6150 Ang.