ePESSTO spectroscopic classification of optical transients

ATel #12371; O. Rodriguez (UNAB/MAS), G. Pignata (UNAB/MAS), M. Gromadzki (Warsaw), T.-W. Chen (MPE), J. Anderson (ESO), H. Kuncarayakti (Univ. of Turku), S. Prentice (QUB), I. Arcavi (Tel Aviv Univ.), C. Inserra (Cardiff), E. Kankare (Univ. of Turku), K. Maguire (QUB), S. J. Smartt (QUB), O. Yaron (Weizmann), I. Manulis (Weizmann), D. R. Young (QUB), J. Tonry (IfA, Univ. of Hawaii), L. Denneau. (IfA, Univ. of Hawaii), A. Heinze (IfA, Univ. of Hawaii), H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI), K. W. Smith (QUB), O. McBrien (QUB), D. E. Wright (Univ. of Minnesota)
on 9 Jan 2019; 15:58 UT
Credential Certification: Mariusz Gromadzki (marg@astrouw.edu.pl)

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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 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 ), 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 ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680). All observations were performed on the ESO New Technology Telescope at La Silla on 2019 Jan 8, 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 
ASASSN-18abx | SN2018kcw  | 22 16 07.9 | -36 50 56.94 |  20181219  | ASAS-SN |  15.3    | 0.011 |  II    |    20d     | (1) 
ATLAS19adv   | SN2019gf   | 08 05 35.2 | -09 34 56.16 |  20190105  |  ATLAS  |  18.8    | 0.060 | Ia-91T | -4  to -2d | (2) 
ATLAS19aew   | SN2019jf   | 08 36 14.8 | -05 21 01.57 |  20190107  |  ATLAS  |  19.2    | 0.041 |  Ia    | -8 to -6d  | 
ZTF19aabyheu | SN2019kf   | 10 27 17.4 | +26 31 59.11 |  20190108  |    ZTF  |  17.9    | 0.021 |  Ia    | -11 to -7d | 

(1) Spectrum shows narrow emission line of Halpha, Hbeta, Hgamma, [S II], [O III], [O II] and Ne I most likely originated from the host. After their subtraction, spectrum matches reasonably well with templates of Supernovae type IIb. Phase is estimated base on ATLAS light curve.
(2) Redshift derived from SNID.