PESSTO spectroscopic classification of optical transients
ATel #5968; M. Fraser, N. Blagorodnova, N. Walton (IoA), M. Dennefeld (IAP), S. Taubenberger (MPA), S. Benetti, A. Pastorello (Padova), C. Inserra, S. Smartt, K. Smith, D. Young (QUB), M. Sullivan (Southampton), S. Valenti (LCOGT), O. Yaron, A. Gal-Yam, (Weizmann), C. Knapic, R. Smareglia, M. Molinaro (Trieste), I. Manulis (Weizmann), D. Wright, R. Kotak, (QUB), S. Valenti (LCOGT), W. Burgett, K. Chambers, M. Huber, R. P. Kudritzki, E. Magnier, J. Morgan, C. Stubbs, W. Sweeney, J. Tonry, C. Waters (IfA, Univ. Hawaii), P. Draper, N. Metcalfe (Univ. of Durham), A. Rest (STScI), C. Baltay, N. Ellman, E. Hadjiyska, R. McKinnon, D. Rabinowitz, E. S. Walker (Yale University), U. Feindt, M. Kowalski (Universitat Bonn), P. Nugent (LBL Berkeley)
on 10 Mar 2014; 18:10 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Morgan Fraser (mf@ast.cam.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 Pan-STARRS (see Valenti et al., ATel #2668), the La Silla-Quest survey (see Hadjiyska et al., ATel #3812), the Catalina Real-time Transient Survey (http://crts.caltech.edu/) and the IAU Transient Objects Confirmation Page list. All observations were performed on the ESO New Technology Telescope at La Silla on 2014 Mar 9, 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
PS1-14pw | 05:45:00.09 | +16:06:07.6 | 20140227 | PS1 | 16.4 | 0 | Stellar? | - | (1)
LSQ14ahb | 10:28:28.51 | +18:00:07.4 | 20140307 | LSQ | 19.5 | 0.04 | II | Young | (2)
LSQ14age | 13:24:08.60 | -13:26:25.9 | 20140308 | LSQ | 20.1 | 0.06 | Ia | -3 d |
LSQ14ahf | 10:53:16.49 | -20:00:40.8 | 20140306 | LSQ | 20.3 | 0.08 | II | Young | (3)
PSNJ13480599+0723164 | 13:48:05.99 | +07:23:16.4 | 20140309 | SNHunt | 16.4 | 0.02 | IIn | ? | (4)
PS1-14pi | 16:24:42.56 | +07:10:55.4 | 20140227 | PS1 | 17.2 | 0.025 | IIn | ~14 d | (5)
PS1-14rl | 17:40:38.19 | +05:16:31.0 | 20140305 | PS1 | 19.6 | - | ? | - | (6)
(1) Featureless, red continuum. Point-like source in reference images, likely stellar variable.
(2) Blue continuum, with broad P-Cygni Balmer lines, consistent with a Type II SN less than a week after explosion.
(3) Narrow emission lines from the host galaxy give z=0.08. Spectrum has a blue continuum, and broad features which give a best match to a Type II SN relatively soon after explosion.
(4) Also known as SNHunt237. Narrow Balmer emission with shallow, broad P-Cygni absorptions. Spectrum also shows broad Ca NIR triplet emission, and broad P-Cygni NaI D.
(5) Best match is to SN 1998S around two weeks after explosion.
(6) Not visible on acquisition image.
