ePESSTO spectroscopic classification of optical transients

ATel #12075; T. Reynolds (Turku), S. Moran (Turku/NOT), J. Harmanen, H. Kuncarayakti (Turku), J. Anderson (ESO), L. Galbany (Pitt), S. Benetti (Padova), S. Prentice (QUB), S. Schulze (Weizmann), C. Inserra (Southampton), E. Kankare (Turku), K. Maguire (QUB), S. J. Smartt (QUB), O. Yaron (Weizmann), D. R. Young (QUB), I. Manulis (Weizmann)
on 3 Oct 2018; 19:44 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Hanindyo Kuncarayakti (kuncarayakti@gmail.com)

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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 ESA Gaia Photometric Science Alerts Team and DPAC (http://gsaweb.ast.cam.ac.uk/alerts), and 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 2018-10-02, 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 
Gaia18cug   | SN2018gwr | 03 11 18.72 | +01 19 00.84 | 2018-09-17 | Gaia    |   19.09  | 0.032 |  II  | +8 to +10 | (1) 
ASASSN-18wf | SN2018gyr | 00 49 47.24 | -61 39 12.89 | 2018-09-30 | ASAS-SN |   17.15  | 0.035 |  Ia  | +8 to +10 | (2) 

(1) Redshift from host galaxy lines. The apparent host is a ring galaxy in the IC 298 interacting galaxy system, with likely sub-solar metallicity. SN 2018gwr was observed with SPRAT on the Liverpool Telescope (Steele et al. 2004, SPIE, 5489, 679) on 2018-09-30.07. Low S/N prevented classification but a broad H-alpha feature, consistent with the ePESSTO classification of a SN II, is clearly present.
(2) Redshift from host galaxy lines (NED), 2MASX J00494722-6139127.