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PESSTO spectroscopic classification of optical transients

ATel #9886; K. W. Smith (QUB), A. Cikota (ESO), M. Magee (QUB), C. Inserra (QUB), M. Dennefeld (IAP, UPMC), M. Fraser (UCD), E. Kankare (QUB), K. Maguire (QUB), S. J. Smartt (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann)
on 20 Dec 2016; 16:59 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Cosimo Inserra (c.inserra@qub.ac.uk)

Subjects: Optical, Supernovae

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 classifications. Targets are from 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 ) and the ESA Gaia Photometric Science Alerts Team and DPAC (http://gsaweb.ast.cam.ac.uk/alerts). All observations were performed on the ESO New Technology Telescope at La Silla on 2016 12 19, 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 
-              | SN2016iye     | 07 45 19.72 | -71 24 17.9 | 20161219   | BOSS    |   17.40  | 0.030 | IIb    | around max | (1) 
ASASSN-16oy    | SN2016iyd     | 07 37 09.76 | -52 19 04.1 | 20161219   | ASASSN  |   16.40  | 0.034 | II     | young      | (2) 
Gaia16cde      | SN2016ixe     | 11 12 27.38 | -06 28 56.0 | 20161217   | Gaia    |   18.99  | 0.091 | Ia     | +6         | (3) 
 

(1) SNID provides good matches to both type Ib and IIb SNe around maximum light.
(2) Spectrum shows flash-ionized emission lines of the Balmer series and a broad emission around 4600 that could be attributable to He II 4686.
(3) SNID provides good matches to normal SNe Ia approximately one week post-maximum.