PESSTO spectroscopic classification of optical transients

ATel #5249; A. De Cia, O. Yaron, P. Vreeswijk (Weizmann), C. Barbarino, M. T. Botticella (INAF - Naples), N. Elias-Rosa (ICE-IEEC/CSIC Barcelona), E. S. Walker (Yale), M. Nicholl (QUB), R. Scalzo (ANU), A. Gal-Yam (Weizmann), S. Benetti, A. Pastorello, (INAF - Padova), S. Valenti (LCOGT/UCSB), S. Taubenberger (MPA Garching), S. J. Smartt, K. Smith, D. Young, M. Fraser, C. Inserra (QUB), M. Sullivan (Uni. of Southampton), C. Knapic, M. Molinaro, R. Smareglia (Trieste), C. Baltay, N. Ellman, E. Hadjiyska, R. McKinnon, D. Rabinowitz (Yale), U. Feindt, M. Kowalski (Universitat Bonn), P. Nugent (LBL Berkeley), Lukasz Wyrzykowski (OGLE)
on 4 Aug 2013; 18:24 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ofer Yaron (ofer.yaron@weizmann.ac.il)

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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 the La Silla-Quest survey (see Hadjiyska et al., ATel #3812) 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 August 04 (UT), using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) and Superfit (Howell et al., 2005, ApJ, 634, 1190). 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 
 
 LSQ13avk         | 22:55:19.31  | -03:13:27.9  | 2013-06-19 |     LSQ      | 18.5      | ~0.043| SN Ia  |  +60   | (1) 
 LSQ13avm         | 21:23:13.48  | -02:14:46.6  | 2013-06-22 |     LSQ      | 16.2      | 0     | Star?  |  ---   | (3) 
 LSQ13avy         | 16:09:16.16  | +11:58:27.0  | 2013-06-19 |     LSQ      | 18.8      | 0.064 | SN Ia  |  +35   | (2) 
 LSQ13azx         | 16:54:58.72  | +13:07:27.8  | 2013-07-12 |     LSQ      | 19.4      | 0.13  | SN Ia  |  +20   | (1) 
 LSQ13bca         | 21:16:16.39  | -20:30:48.9  | 2013-07-07 |     LSQ      | 19.9      | ~0.08 | SN II  |   -3   | (6) 
 LSQ13bdk         | 22:44:00.31  | +01:00:20.8  | 2013-07-15 |     LSQ      | 20.7      | 0.156 | SN Ia  |   +5   | (1) 
 LSQ13bgd         | 02:32:42.01  | -33:00:04.1  | 2013-07-25 |     LSQ      | 19.6      | 0.035 | SN II  |    0   | (4) 
 LSQ13bic         | 22:11:54.30  | +03:29:39.0  | 2013-07-28 |     LSQ      | 18.9      | ~0.07 | SN Ia  |    0   | (2) 
 LSQ13bir         | 21:14:02.98  | -31:19:23.4  | 2013-07-27 |     LSQ      | 19.1      | ~0.1  | SN Ia  |   +5   | (2) 
 OGLE-2013-SN-038 | 23:39:24.83  | -67:02:55.1  | 2013-07-17 |     OGLE     | 19.0      | 0.045 | SN II? | ~+10?  | (5) 

(1) Good match with several normal type Ia SNe within ~5 days of the indicated phase.

(2) Good match with several normal and 91T-like type Ia SNe within ~5 days of the indicated phase.

(3) Spectrum shows a blue continuum, possibly of a blue SDSS star (with r~21.9) that lies within 1" of the actual transient. (The transient may be too faint to be picked up.)

(4) Good match with several type IIP SNe within ~5 days of the indicated phase.

(5) Reclassification, still showing a blue continuum, with only subtle features on the blue side. Good Superfit match to SN1998S at +11d, but additional possible matches exist to types Ib/c.

(6) Best match to SN1993J towards peak, but currently cannot be securely identified as a type IIb.