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PESSTO spectroscopic classification of optical transients

ATel #8363; R. Le Breton, L. Le Guillou, S. Baumont (LPNHE), J. Anderson (ESO), L. Galbany (DAS, MAS), C. Inserra (QUB), E. Kankare (QUB), K. Maguire (QUB), S. J. Smartt (QUB), K. Smith (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), D. Young (QUB), I. Manulis, O. Yaron (Weizmann), S. J. Smartt (QUB), K. Smith (QUB), D. Wright (QUB), K. Chambers, H. Flewelling, M. Huber, E. Magnier, J. Tonry, C. Waters, R. J. Wainscoat (IfA, Univ. Hawaii), L. Wyrzykowski (Warsaw Observatory, Poland)
on 4 Dec 2015; 17:11 UT
Credential Certification: Sylvain Baumont (baumont@lpnhe.in2p3.fr)

Subjects: Optical, Supernovae

PESSTO, the Public ESO Spectroscopic Survey for Transient The Objects (see Valenti et al., ATel #4037; http://www.pessto.org ), reports the following supernova classifications. Targets were supplied by Pan-STARRS Survey for Transients (see Huber et al., ATel #7153) and OGLE-IV Real-time Transient Search (Wyrzykowski et al., 2014 arxiv:1409.1095; http://ogle.astrouw.edu.pl/ ). All observations were performed on the ESO New Technology Telescope at La Silla on 2015 December 03, 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
OGLE15vk | 01 24 40.98 | -74 47 15.2 | 20151113 | OGLE | 21.1 | 0.050 | Ic | at max. | OGLE15tt | 06 17 57.91 | -74 12 41.1 | 20150929 | OGLE | 20.9 | 0.039 | II? | >20 days | (1) PS15cze | 03 47 23.43 | +00 52 37.8 | 20151201 | Pan-STARRS | 18.7 | 0.039 | Ia | -3 days | PS15cyn | 05 02 34.58 | -27 42 01.5 | 20151127 | Pan-STARRS | 18.4 | 0.060 | Ia | +5 days | PS15cyo | 09 39 23.94 | +06 24 18.4 | 20151127 | Pan-STARRS | 19.0 | 0.031 | Ic | >20 days | (2)

(1) Red featureless spectrum, with strong Halpha (40 Angstrom FWHM), possibly caused by CSM interaction.
(2) Low S/N spectrum. Fair match to type Ic SN2004aw, 25 days after maximum.