ePESSTO+ spectroscopic classification of optical transients

ATel #12721; M. Nicholl, P. Short (Edinburgh), E. Swann (Portsmouth), C. R. Angus, M. Smith (Southampton), C. Gutierrez (Southampton), L. Galbany (Pittsburgh), H. Kuncarayakti (Turku), J. Anderson (ESO), T.-W. Chen (MPE), C. Inserra (Cardiff), 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 3 May 2019; 16:20 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Mathew Smith (matsmith2@gmail.com)

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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 ATLAS survey, see Tonry et al. (2018, PASP, 130, 064505), 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/) and 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 ). All observations were performed on the ESO New Technology Telescope at La Silla on 2019 May 02, 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 
ATLAS19igh   | SN2019ejj | 08 07 08.76 | -28 03 11.8 |  20190502  | ATLAS  |   17.8   | 0.003 |   II    |  pre-max   | (1, 2) 
ZTF19aatazmc | AT2019egf | 11 05 36.13 | -11 52 48.5 |  20190429  | ZTF    |   17.3   | 0.079 | Unknown | - - - - -  | (1, 3) 
ASASSN-19ln  | SN2019eim | 23 49 42.93 | -69 42 02.3 |  20190501  | ASASSN |   17.3   | 0.039 |   Ia    |  -7 to -4  | 
ASASSN-19kw  | SN2019edm | 23 47 45.38 | -27 29 08.9 |  20190426  | ASASSN |   16.5   | 0.028 |   Ia    | +11 to +20 | (1, 4) 
 

(1) Redshift from galaxy emission / absorption lines
(2) Spectrum is well matched to 2005cs at 2 days prior to maximum light
(3) Spectrum is dominated by galaxy light. No evidence of the transient is seen in the extracted 1D spectrum
(4) Also discovered by the Gaia survey as Gaia19boh