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ePESSTO spectroscopic classification of optical transients: SN2018gv a very young SN Ia

ATel #11177; F. Bufano (INAF Catania), M. Berton (Uni Padova), C. Vogl (MPA), A. Floers, S. Taubenberger, J. Anderson (ESO), L. Galbany (Pittsburgh), S. Schulze, O. Yaron, I. Manulis (Weizmann), C. Inserra (Southampton), E. Kankare, K. Maguire, S. J. Smartt, D. Young, K. W. Smith, O. McBrien (QUB), J. Tonry, L. Denneau., A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI)
on 16 Jan 2018; 12:48 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Stefan Taubenberger (tauben@mpa-garching.mpg.de)

Subjects: Optical, Supernovae

Referred to by ATel #: 11211

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 taken from the IAU TNS list (see https://wis-tns.weizmann.ac.il/). The observations were performed on the ESO New Technology Telescope at La Silla on 2018 Jan 16.1 UT, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). The classification was 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 
AT2018gv    | SN2018gv | 08 05 34.60 | -11 26 16.2 |  20180115  | IAU TNS |   16.5   | 0.0053 |  Ia  | <-10  | (1) 

(1) Discovered by Koichi Itagaki In NGC 2525. SNID finds reasonable matches with SN 1990N at -13d and SN 1994D at -11d. At a distance of 20-22Mpc, this will likely peak around 13th mag. We note that ATLAS has a detection at o=18.1 on 2018 Jan 14.5 UT, supporting a fast rising, young SN Ia.