ePESSTO+ spectroscopic classification of optical transients

ATel #12715; P. Short, M. Nicholl (Edinburgh), E. Swann (Portsmouth), M. Smith, C. R. Angus (Southampton), H. Kuncarayakti (Turku), C. Gutierrez (Southampton, L. Galbany (Pittsburgh), 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 2 May 2019; 17:20 UT
Credential Certification: Charlotte Angus (c.r.angus@soton.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 ATLAS survey, see Tonry et al. (2018, PASP, 130, 064505) and 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 May 1, using EFOSC2 and Grism 11 and 13 (3380-7520, 3985-9315A, 18A resolution). Classifications were done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) and Superfit (Howell et al. 2005, ApJ, 634, 1190). 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 
ATLAS19hvy   | SN2019dyt | 14 24 48.60 | +02 39 06.3 |  20190425  | ATLAS  |   18.93  | 0.054 | Ia     | at max   | (1,2) 
ZTF19aamrais | SN2019cqc | 18 21 43.04 | +30 59 33.4 |  20190325  | ZTF    |   19.3   | 0.118 | SLSN-I | at max   | (3,4,5) 

(1) Classification matches that of TNS Classification Report No. 3961
(2) Spectrum exhibits an excess of calcium emission in the nIR
(3) First reported in ATel 12711
(4) Spectrum exhibits a blue continuum with broad, shallow absorption features consistent with OII
(5) Redshift derived from host galaxy emission lines