[ Previous | Next | ADS ]

PESSTO spectroscopic classification of optical transients

ATel #5912; Heather Campbell, M. Fraser, N. Blagorodnova, N. Walton (IoA), A. De Cia (Weizmann), Nancy Elias-Rosa (INAF Astronomical Observatory of Padova), S. Benetti, A. Pastorello (Padova), R. Kotak, C. Inserra, S. Smartt, K. Smith, D. Wright, D. Young (QUB), M. Sullivan (Southampton), S. Taubenberger (MPA), S. Valenti (LCOGT), O. Yaron, A. Gal-Yam, (Weizmann), C. Knapic, R. Smareglia, M. Molinaro (Trieste), Ilan Manulis (Weizmann), L. Wyrzykowski,(Warsaw Observatory, Poland), 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), R. Scalzo, F. Yuan, M. Childress, B. Tucker, B. Schmidt (Australian National University)
on 21 Feb 2014; 16:18 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Nadejda Blagorodnova (nblago@ast.cam.ac.uk)

Subjects: Optical, Supernovae

Referred to by ATel #: 5915

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 Catalina Real-time Transient Survey (http://crts.caltech.edu/), the La Silla Quest Survey (see Hadjiyska et al., ATel #3812), the OGLE-IV Transient Search (ATel #4495; Wyrzykowski et al. 2012), and SkyMapper (Scalzo et al. ATel #5480). All observations were performed on the ESO New Technology Telescope at La Silla on 2014 Feb 20 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
SMTJ013533283-5757506 | 01:35:32.83 | -57:57:50.6 | 20131227 | SkyMapper | 18.10 | 0.13 | SLSN-II | ~max | (1) OGLE-2014-SN-004 | 04:38:36.94 | -65:31:29.7 | 20140126 | OGLE | 18.79 | 0.03 | IIP | +30d | (2) OGLE-2014-SN-009 | 05:29:53.68 | -53:53:17.0 | 20140203 | OGLE | 20.0 | 0.055| II? | | (3) CSS140128-100158+255444 | 10:01:57.63 | +25:54:44.0 | 20140128 | CRTS | 19.6 | 0.15 | Ia | +2w | LSQ14ws | 10:11:56.82 | +19:13:41.5 | 20140219 | LSQ | 19.70 | | | | (4) LSQ14wp | 10:14:05.71 | +06:40:30.3 | 20140217 | LSQ | 18.52 | 0.07 | Ia | premax| (5) LSQ14vu | 10:27:48.97 | -19:16:25.1 | 20140209 | LSQ | 19.99 | 0.13 | Ia | ~max | LSQ14kp | 12:10:11.32 | -22:10:41.8 | 20140128 | LSQ | 16.72 | 0.03 | Ia | +8d | LSQ14tf | 12:19:39.70 | -34:14:14.7 | 20140214 | LSQ | 20.67 | | | | (7) MLS140111-122630-031800 | 12:26:30.48 | -03:18:00.0 | 20130518 | CRTS | 17.56 | | | | (6) LSQ14ug | 12:57:03.40 | -12:16:22.2 | 20140215 | LSQ | 19.43 | 0.02 | II | ~max | LSQ14vw | 13:17:37.00 | -12:15:04.6 | 20140215 | LSQ | 19.42 | 0.1 | Ia | +5d |

(1) Very blue. Narrow emission feature at 7500A, possibly Halpha, then object at z=0.13. Broad features in the blue, clearly a SN. Similar to 2010gx and CSS121015:004244+132827 (Benetti S. et. al. 2013). (2) Abs mag -16.5. See discovery ATel 5817 (3) SN, shows Halpha line with a broad (~2000 kms) absorption. SN is near nucleus of bright host galaxy. Confirm Type II at z=0.055. See also classification ATel 5864. (4) Blue featureless continuum. Could be a very young SN. (5) Best match Ia 91T type. (6) Blue continuum with narrow emission lines. Blue most line consistent with O II at z=0.21 has a broad base. Matches an SDSS galaxy with photometric approximate redshift z=0.2. (7) Blue and featureless spectrum. Perhaps Type II, at least 12 days old, possibly post max.