ePESSTO spectroscopic classification of optical transients

ATel #11973; Z. Kostrzewa-Rutkowska (SRON/RU), E. Callis (UCD), M. Fraser (UCD), L. Galbany (U. Pitt), J. Anderson (ESO), 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), K. C. Chambers, H. Flewelling, M. Huber, T. Lowe, E. Magnier, A. Schultz, C. Waters, R. J. Wainscoat, M. Willman (IfA, Univ. of Hawaii).
on 20 Aug 2018; 15:19 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Morgan Fraser (morgan.fraser@ucd.ie)

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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 Zwicky Transient Facility (https://www.ztf.caltech.edu/); and the Pan-STARRS Survey for Transients (see Chambers et al. 2016, arXiv:1612.05560, and http://pswww.ifa.hawaii.edu ). All observations were performed on the ESO New Technology Telescope at La Silla on 2018 August 19, 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 
ATLAS18tea   |           | 20:53:53.9 | -38:00:55.6 |  20180722  | ATLAS  |   19.0   | 0.046 | II   | +4w   | 
ATLAS18tck   | SN2018erl | 21:12:09.7 | -08:27:42.3 |  20180713  | ATLAS  |   18.8   | 0.029 | Ia   | +4w   | 			 
ZTF18abmrhom | AT2018ffi | 21:40:11.3 |  21:33:30.2 |  20180812  | ZTF    |   20.3   | 0.07  | Gal  | -     | (1) 
ATLAS18tyo   | AT2018ffw | 23:52:08.1 | -27:48:07.7 |  20180819  | ATLAS  |   19.1   | 0     | CV   |       |  
ATLAS18tyv   | AT2018ffx | 03:04:37.3 | -25:11:57.1 |  20180817  | ATLAS  |   19.3   | 0     | CV   | -     | 
ATLAS18txn   | SN2018ffn | 00:24:07.8 | -07:52:49.6 |  20180818  | ATLAS  |   19.3   | 0.10  | Ia   | +10d  |	 
ATLAS18srd   | SN2018eew | 01:52:03.8 | -07:38:33.1 |  20180726  | ATLAS  |   18.2   | 0.06  | Ia   | +4w   | (2)	 

(1) Early type galaxy light only seen in spectrum, redshift measured from NaD line.
(2) Also discovered by PanSTARRS as PS18biq, classification is based on low S/N spectrum.