[ Previous | Next | ADS ]

PESSTO spectroscopic classification of optical transients

ATel #6478; C. Ashall (LJMU), M. Fraser, N. Walton, N. Blagorodnova (IoA), J. Anderson (ESO), A. De Cia (Weizmann), C. Inserra (QUB), K. Maguire (ESO), S. J. Smartt (QUB), K. W. Smith (QUB), M. Sullivan (Southampton), S. Valenti (LCOGT), O. Yaron (Weizmann), D. Young (QUB), Ilan Manulis, A. Gal-Yam (Weizmann), C. Baltay, N. Ellman, E. Hadjiyska, R. McKinnon, D. Rabinowitz, E. S. Walker, S. Rostami (Yale University), U. Feindt, M. Kowalski (Universitat Bonn), P. Nugent (LBL Berkeley), L. Wyrzykowski,(Warsaw Observatory, Poland).
on 16 Sep 2014; 16:31 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Nadejda Blagorodnova (nblago@ast.cam.ac.uk)

Subjects: Optical, Cataclysmic Variable, Supernovae

Referred to by ATel #: 6494

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 the La Silla Quest Survey (Baltay et al. 2013, PASP, 125, 683), All Sky Automated Survey for SuperNovae ASAS-SN (http://www.astronomy.ohio-state.edu/~assassin/index.shtml), the Catalina Real-time Transient Survey (http://crts.caltech.edu/) and the OGLE-IV Transient Search (ATel #4495; Wyrzykowski et al. 2012). All observations were performed on the ESO New Technology Telescope at La Silla on 2014 Sep 15 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
ASASSN-14gs | 16:36:11.17 | -26:12:02.7 | 2014-09-06 | ASASSN | 14.50 | 0.00 | CV | - | (1) CSS140901-215624+190642 | 21:56:24.24 | +19:06:41.5 | 2014-09-01 | CRTS | 17.50 | - |Unknown| - | (2) CSS140914-010107-101840 | 01:01:07.04 | -10:18:39.9 | 2014-09-14 | CRTS | 18.57 |~0.03 | Ia | ~-7d | (3) LSQ14fgo | 04:00:40.99 | -59:59:17.2 | 2014-09-12 | LSQ | 19.40 | - |Unknown| - | (4) LSQ14fhd | 23:53:31.54 | -37:59:25.9 | 2014-09-12 | LSQ | 19.64 | 0.06 | Ia | -7d | OGLE-2014-SN-071 | 00:48:26.65 | -74:10:39.1 | 2014-08-21 | OGLE | 19.14 | 0.032| II | +7d |

(1) Discovery Atel #6450. Balmer absorption lines at redshift z=0.00. (2) Classification spectrum has low signal to noise. Appears as blue and featureless. (3) Low S/N spectrum. Redshift estimation is uncertain around 0.02 - 0.03. Object's magnitude at one week pre-maximum agrees with SN Ia lightcurve. No obvious close (<20") host galaxy visible in SDSS. (4) Low S/N spectrum. Blue and featureless continuum.