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ePESSTO spectroscopic classification of optical transients

ATel #10909; D. O'Neill (QUB), M. Magee (QUB), J. Anderson (ESO), M. Dennefeld (IAP/UMPC), C. Inserra (Southampton), E. Kankare (QUB), K. Maguire (QUB), S. J. Smartt (QUB), K. W. Smith (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann), J. Tonry, B. Stalder, L. Denneau, A. Heinze, H. Weiland (IfA, Univ. of Hawaii), A. Rest (STScI)
on 30 Oct 2017; 17:31 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Mark Magee (mmagee37@qub.ac.uk)

Subjects: Optical, Supernovae

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 ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680), 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 2017 10 29, 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 
ATLAS17mmu   | AT2017hnj     | 02 38 44.48 | -34 48 25.1 | 20171011   | ATLAS   |   18.55  | -     | Stellar | -         | (1) 
ASASSN-17ny  | SN2017hpi     | 08 15 43.46 | -28 51 19.8 | 20171026   | ASASSN  |   15.80  | 0.006 | II      | max       | (2) 

(1) Spectrum shows a red continuum, weak H-alpha and -beta emission features, and strong absorption features. Transient appears similar to a carbon star.
(2) Redshift from host galaxy. SNID provides a best match to SN2004et around maximum light.