ePESSTO+ spectroscopic classification of optical transients

ATel #12852; E. Swann, C. Frohmaier (ICG; Portsmouth), P. Short, M. Nicholl (Edinburgh), M. Dennefeld (IAP), S. C. Williams (Lancaster), P. Pessi (IALP), J. Anderson (ESO), T. Muller Bravo (Southampton), T.-W. Chen (MPE), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), 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, S. J. Smartt, O. McBrien, S. Srivastav (QUB)
on 8 Jun 2019; 13:28 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Matt Nicholl (mrn@roe.ac.uk)

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ePESSTO+, the advanced 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 IAU TNS list (see https://wis-tns.weizmann.ac.il/), by 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 ), by the ATLAS survey, see Tonry et al. (2018, PASP, 130, 064505), and by the Zwicky Transient Facility (https://www.ztf.caltech.edu/; Kulkarni et al. 2018, ATel 11266) data stream processed through the Lasair broker (http://lasair.roe.ac.uk/). All observations were performed on the ESO New Technology Telescope at La Silla on 2019 June 7, 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 
             | SN2019hbt | 13:43:10.29 | +30:20:36.3 |  20190606  | ISSP     |   18.9   | 0.034 | II     |  Premax   | (1) 
ASASSN-19oi  | SN2019gxa | 23:53:51.76 | -40:01:18.8 |  20190604  | ASAS-SN  |   17.4   | 0.04  | Ia     |  +8d      | 
             | SN2019has | 02:46:55.18 | -24:48:24.0 |  20190607  | ASAS-SN  |   16.4   | 0.022 | Ia     |  -7d      | (2) 
ATLAS19lzg   | SN2019giq | 23:31:41.80 | -13:15:03.6 |  20190531  | ATLAS    |   18.2   | 0.03  | Ia     |  -6d      | 
ASASSN-19oe  | SN2019gvo | 00:54:30.81 | -49:08:54.0 |  20190601  | ASAS-SN  |   18.1   | 0.05  | Ia     |  At max   | 
ZTF19aaxibpz | SN2019gwx | 23:10:01.02 | +09:37:12.3 |  20190604  | ZTF      |   18.8   | 0.071 | Ia     |  -5d      |  (3) 
ASASSN-19nx  | SN2019gql | 00:51:40.93 | -13:19:03.7 |  20190601  | ASAS-SN  |   17.4   | 0.021 | II     |  At max   | (3) 

(1) Spectrum is dominated by a blue continuum, with weak Balmer and He II emission lines consistent with flash ionisation in a young SN II. GELATO also finds some matches to young SNe IIn.
(2) Although first discovery report is from ASASSN, no internal survey name is listed on TNS. Redshift from host galaxy.
(3) Redshift from galaxy emission lines.