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PESSTO spectroscopic classification of optical transients

ATel #10096; A. Nyholm, C. Barbarino, F. Taddia, C. Fremling, J. Sollerman (OKC), M. T. Botticella (INAF-Capodimonte), M. Fraser (UCD), C. Inserra, E. Kankare, K. Maguire, S. J. Smartt, K. W. Smith, D. Young (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron, I. Manulis (Weizmann)
on 19 Feb 2017; 13:13 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Francesco Taddia (ftadd@astro.su.se)

Subjects: Optical, Supernovae, Transient

PESSTO, the 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 observation was performed on the ESO New Technology Telescope at La Silla on 2017 February 18, 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 
  
ASASSN-17cm | SN2017aut | 05 47 42.40 | -79 12 51.4 |  20170214  | ASASSN |   16.4   | 0.0172 |  Ia  | +8 to +10 d | (1) 
 

(1) Several good matches to SNe Ia at +8 to +10 days. This phase is not consistent with the last non-detection reported in the discovery ATel #10084.