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PESSTO spectroscopic classification of optical transients

ATel #5970; N. Walton, M. Fraser, N. Blagorodnova (IoA), S. Taubenberger (MPA), M. Dennefeld (IAP), 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 11 Mar 2014; 16:36 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/), DECam (Forster et al., ATel #5949) and the IAU Transient Objects Confirmation Page list. All observations were performed on the ESO New Technology Telescope at La Silla on 2014 Mar 10, 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 
PS1-14qh | 11:16:43.16 | -16:45:04.9 | 20140227 | PS1 | 19.4 | 0.13 | Ia | +7d | LSQ14xp | 10:31:03.58 | +19:02:01.6 | 20140223 | LSQ | 20.3 | 0.16 | Ia | +10d | LSQ14ahn | 12:24:36.51 | -13:54:06.0 | 20140308 | LSQ | 20.0 | 0.085 | SN? | +3d? | (1) PAMELA | 10:40:17.21 | -01:49:09.6 | 20140301 | DECam | 20.5 | 0.14 | Ia | -5d | PS1-14rq | 10:17:13.15 | -21:03:57.1 | 20140309 | PS1 | 16.4 | 0.012 | II | +3w | (2) CSS140309-103126-155700 | 10:31:25.62 | -15:57:00.2 | 20140309 | CRTS | 18.6 | 0.07 | Ia | +3d | MLS140310-111158+053913 | 11:11:57.61 | +05:39:13.1 | 20140310 | CRTS | 18.6 | 0.11 | Ia | -5d | PS1-14rx | 12:46:53.35 | +14:47:50.1 | 20140309 | PS1 | 19.8 | 0.06 | Ia | -6d | LSQ14aeg | 10:19:36.79 | +19:33:20.3 | 20140308 | LSQ | 18.6 | 0.06 | Ia | ~max | PS1-14qc | 08:36:07.45 | -00:29:28.4 | 20140227 | PS1 | 19.6 | 0.058 | II | ? | (3) PS1-14qg | 09:07:30.56 | -09:58:08.7 | 20140227 | PS1 | 19.6 | 0.06 | Ib | ~max | PSNJ15044009+1237540 | 15:04:40.09 | +12:37:54.0 | 20140309 | TOCP | 16.6 | 0.03 | Ia | ~max | LSQ14aga | 14:25:20.53 | -16:38:24.3 | 20140308 | LSQ | 20.2 | 0.13 | Ia | +3d | PS1-14qo | 12:24:32.19 | -15:47:14.7 | 20140227 | PS1 | 19.5 | - | - | - | (4) PS1-14re | 15:02:20.56 | +05:52:53.5 | 20140305 | PS1 | 19.5 | - | - | - | (5) LSQ14agx | 11:55:00.34 | -05:14:45.3 | 20140305 | LSQ | 20.8 | 0.14 | Ia | -2d | (6) LSQ14afa | 14:58:30.48 | -15:25:13.0 | 20140308 | LSQ | 18.6 | 0 | Stellar | - | (7)

(1) Spatially extended Halpha and [O III] 5007 Ang emission is seen in the 2d spectrum, consistent with z=0.085. The spectrum is blue and featureless, and well fitted by a 13,000 K blackbody. Consistent with a young Type II SN a few days after explosion.
(2) Spectrum has broad P-Cygni lines in H, the Ca NIR triplet, and numerous metal lines in the blue, as seen in Type IIP SNe a few weeks into the plateau phase.
(3) Redshift measured from narrow Halpha emission. Low S/N spectrum also shows a broad emission feature at Halpha.
(4) Not visible in acquisition image.
(5) Not visible in acquisition image to a limiting magnitude of V~20.8.
(6) Spectrum is red, and dominated by host galaxy light, but SN features are visible in the blue.
(7) Spectrum has a blue continuum with narrow H emission lines at z=0.