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ePESSTO spectroscopic classification of optical transients

ATel #12001; M. Gromadzki (Warsaw), T. Wevers (Cambridge), G. Pignata (UNAB/MAS), O. Rodriguez (UNAB/MAS), C. Barbarino (Stockholm), L. Galbany (U. Pitt), C. Inserra (Southampton), E. Kankare (QUB), K. Maguire (QUB), S. J. Smartt (QUB), O. Yaron (Weizmann), D. R. Young (QUB), I. Manulis (Weizmann), J. Tonry, L. Denneau., A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST) A. Rest (STScI), K. W. Smith, O. McBrien (QUB), D. E. Wright (Univ. of Minnesota), B. E. Tucker (Mt Stromlo Observatory, ANU), G. Narayan (STScI), P. M. Garnavich (Notre Dame), S. Margheim (Gemini Observatory), D. Kasen (UCB/LBL), R. Olling, E. Shaya (University of Maryland)
on 1 Sep 2018; 23:17 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Giuliano Pignata (pignago@gmail.com)

Subjects: Optical, Supernovae, Transient

Referred to by ATel #: 12021

ePESSTO, the extended Public ESO Spectroscopic Survey for Transient Objects (see Smartt et al. 2015, A&A, 579, 40 http://www.pessto.org ), reports the following supernova classifications. Targets were supplied by the ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680)"; the Pan-STARRS Survey for Transients (see Chambers et al. 2016, arXiv:1612.05560, and http://pswww.ifa.hawaii.edu ); the All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014, ApJ, 788, 48 and http://www.astronomy.ohio-state.edu/~assassin/index.shtml ) and the Zwicky Transient Factory (https://www.ztf.caltech.edu/). All observations were performed on the ESO New Technology Telescope at La Silla on 2018 August 31, 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 and additional details can be obtained from http://www.pessto.org (via WISeREP) and the IAU Transient Name Server.

 
Survey Name  | IAU Name  | RA (J2000)  | Dec (J2000) | Disc. Date | Source  | Disc Mag |  z    | Type  | Phase | Notes 
ATLAS18uag   | SN2018fit | 23:25:16.17 | +13:56:02.6 |  20180821  |  ATLAS  |   18.8   | 0.014 |  II   | +5d   | (1) 
ATLAS18txp   | SN2018ffo | 01:05:42.49 | +07:32:55.6 |  20180727  |  ATLAS  |   17.7   | 0.040 |  Ia   | +45d  | (2) 
ASASSN-18tc  | SN2018fhx | 06:24:38.04 | -23:43:58.9 |  20180821  |  ASASSN |   17.0   | 0.023 |  Ia   | +4d   | (3) 
ZTF18abqbuaj | AT2018fmt | 01:21:00.86 | -13:51:46.6 |  20180827  |  ZTF    |   18.8   |  ?    |   ?   |  ?    | (4) 
ZTF18abqqegi | AT2018fms | 01:12:32.22 | +10:05:39.8 |  20180828  |  ZTF    |   17.5   |  0.0  | Mstar |  -    |  

(1) Good match with the subluminous type II SN2005cs.
(2) Also discovered by PanSTARRS as PS18bkt.
(3) Good match with a subluminous type Ia SN1997cn.
(4) Low S/N spectrum which appears blue and featureless, aside from a possible faint narrow Halpha at z=0.05.