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ePESSTO spectroscopic classification of optical transients

ATel #11519; A. Rubin (WIS), D. Malesani (DAWN, DARK), K. E. Heintz (Univ. Iceland, DAWN), M. Dennefeld (IAP/Sorbonne University), L. Galbany (Pittsburgh), M. Gromadzki (Warsaw Observatory), S. Benetti (INAF-OAPd), C. Inserra (Southampton), E. Kankare, K. Maguire, S. J. Smartt (QUB), O. Yaron (Weizmann), D. Young (QUB)
on 9 Apr 2018; 18:10 UT
Credential Certification: Giorgos Leloudas (giorgos@dark-cosmology.dk)

Subjects: Optical, Supernovae, Transient

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 classification. The target was 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 observations were performed on the ESO New Technology Telescope at La Silla on 2018 April 8 UT, 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). The classification spectrum 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-18hh | SN2018are  | 13 49 26.87 | 26 27 42.9  | 2018 04 05 | ASAS-SN  | 18.30     | 0.08 | Ia-91T | -7 to -4 | (1) 

(1) We get a good match with a SN type Ia-91T and estimate the phase to be within -7 to -4 days.