ePESSTO spectroscopic classification of optical transients

ATel #12363; G. Pignata (UNAB/MAS), O. Rodriguez (UNAB/MAS), M. Gromadzki (Warsaw), T.-W. Chen (MPE), J. Anderson (ESO), A. Pastorello (INAF), 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)
on 7 Jan 2019; 15:13 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 are are from 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 Jan 6, 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-19aa  | SN2019A    | 11 39 08.73	| -21 32 30.8 |  20190101  | ASAS-SN |  17.7    | 0.072 |  Ia  | +4 to +8d | 
ASASSN-19af  | SN2019cj   | 04 56 22.92	| -46 02 11.2 |  20190103  | ASAS-SN |  18.3    | 0.045 | core-collapse |  premax   | (1) 

(1) Spectrum shows blue continuum and emission lines of HeII 4686 Angstroms and N III 4640 Angstroms at the redshift of the host (z = 0.0445). Transient is most likely young core-collapse supernova with narrow lines indicating the presence of circumstellar material.