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PESSTO spectroscopic classification of optical transients

ATel #6400; L. Tartaglia, N. Elias-Rosa, A. Morales-Garoffolo (ICE-CSIC/IEEC), S. Benetti, L. Tomasella, A. Pastorello (INAF-Padova) , M. T. Botticella (INAF-OAC), C. Inserra (QUB), K. Maguire (ESO), S. Smartt (QUB), K. W. Smith (QUB), M. Sullivan (Southampton University), S. Valenti (LCOGT), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann), C. Baltay, N. Ellman, E. Hadjiyska, R. McKinnon, D. Rabinowitz, S. Rostami, E. S. Walker (Yale University), U. Feindt, M. Kowalski (Universitat Bonn), P. Nugent (LBL Berkeley), L. Wyrzykowski (Warsaw Observatory, Poland)
on 18 Aug 2014; 20:47 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: N. Elias-Rosa (nancy.elias@oapd.inaf.it)

Subjects: Optical, Supernovae

Referred to by ATel #: 6403, 6423

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 Baltay et al., PASP, 2013, 125, 683) and the OGLE-IV wide field survey (http://ogle.astrouw.edu.pl/ogle4/transients/transients.html). All observations were performed on the ESO New Technology Telescope at La Silla in the night starting on 2014 Aug 17 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
LSQ14eef | 21 23 33.46 | -08 45 36.6 | 20140727 | LSQ | 19.7 | 0.06 | Ia | +3d | LSQ14eeh | 21 05 29.94 | -05 25 03.2 | 20140725 | LSQ | 20.6 | 0.09 | IIP | +20d | (1) LSQ14efn | 20 26 35.43 | -48 12 30.3 | 20140724 | LSQ | 17.9 | 0.04 | Ia | +6d | LSQ14eek | 21 36 50.32 | -02 28 06.4 | 20140727 | LSQ | 18.8 | 0.08 | Ia | +5d | (2) LSQ14eet | 22 50 11.71 | +14 57 32.1 | 20140802 | LSQ | 19.8 | 0.12 | Ia | max | LSQ14eew | 23 20 42.10 | +15 54 37.1 | 20140725 | LSQ | 19.4 | 0.10 | Ia | +6d | LSQ14efd | 03 35 38.76 | -58 52 38.3 | 20140817 | LSQ | 20.1 | 0.28:| II |unknown| (3) LSQ14eey | 23 38 11.68 | +23 04 50.0 | 20140802 | LSQ | 18.8 | 0.09 | Ia | +3d | LSQ14efh | 20 36 22.65 | -55 25 54.6 | 20140724 | LSQ | 20.5 | 0.13 | Ia | +4d | LSQ14een | 22 32 18.79 | -02 42 50.5 | 20140729 | LSQ | 20.4 | 0.14 | Ia | +4d | LSQ14eds | 00 38 18.78 | -17 58 16.6 | 20140725 | LSQ | 20.2 | 0.17 | Ia | +2d | OGLE-2014-SN-047 | 03 30 15.46 | -75 40 47.0 | 20140707 | OGLE | 19.4 | 0.18:| I |unknown| (4)

(1) Noisy spectrum, with P-Cygni H clearly visible; The subtype IIP has been determined using the LSQ light curve information.
(2) Best match with several normal Ia SNe but even with peculiar Ia SN 2006gz.
(3) Low S/N spectrum. Possible match with a type IIn with a tentative redshift of z=0.28.
(4) Low S/N spectrum. Possible match with a type Ic around maximum. Adopting tentatively a redshift z=0.18, an absolute mag of M_i ~ -20 is obtained from the OGLE-IV data.