PESSTO spectroscopic classification of optical transients

ATel #4795; A. Morales Garoffolo, N. Elias-Rosa (ICE-IEEC/CSIC Barcelona), S. Benitez-Herrera, S. Taubenberger (MPA Garching), M. T. Botticella (INAF - Capodimonte Astronomical Observatory), S. Benetti, A. Pastorello (INAF - Padova Astronomical Observatory), S. Valenti (LCOGT/UCSB), 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 7 Feb 2013; 14:50 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Stefan Taubenberger (tauben@mpa-garching.mpg.de)

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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 amateur astronomers (http://www.cbat.eps.harvard.edu/unconf/tocp.html). All observations were performed on the ESO New Technology Telescope at La Silla in the night starting on 2013 February 6 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).

 
 Name                  | RA (J2000)  | Dec (J2000) | Disc. Date | Disc. Source | Disc Mag |   z   |   Type   | Phase | Notes
 
 PSN J15213475-0722183 | 15 21 34.75 | -07 22 18.3 |  20130127  |     TOCP     |   17.6   | 0.006 | impostor |   ?   | See note (1) 
 

(1) Low-S/N spectrum showing a continuum with superimposed narrow Balmer emission lines. The spectroscopic appearance together with the absolute magnitude of -14.5 (unfiltered) at discovery suggests this object to be a SN impostor.