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PESSTO spectroscopic classification of optical transients

ATel #6417; L. Tartaglia, N. Elias-Rosa (INAF-Padova), G. Terreran (QUB, INAF-Padova), S. Benetti (INAF-Padova), 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 25 Aug 2014; 15:01 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Giacomo Terreran (gterreran01@qub.ac.uk)

Subjects: Optical, Supernovae

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 All Sky Automated Survey for SuperNovae ASAS-SN (http://www.astronomy.ohio-state.edu/~assassin/index.shtml). All observations were performed on the ESO New Technology Telescope at La Silla in the night starting on 2014 Aug 24 UT, using EFOSC2 and Grism 13 (3650-9200A, 28A 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 
LSQ14eol     | 21:58:31.63 | -55:06:07.4 | 20140821   | LSQ          | 18.47     | 0.036| II    | ~+7d  | 1 
ASASSN-14fw  | 23:49:06.72 | -07:02:56.6 | 20140818   | ASASSN       | 16.9      | 0.019| Ia    | +10d  | 
 

(1) Noisy spectrum showing a blue continuum and unresolved Balmer emissions at z=0.036. Faint H-beta and H-delta possibly show broad P-Cyg profiles. From the minimum of their troughs an expansion velocity of about 9000 km/s is derived. The proposed classification is thus of a young SNII, at least 7d after explosion as also inferred from the LSQ light curve.

PESSTO, the Public ESO Spectroscopic Survey for Transient Objects