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PESSTO spectroscopic classification of optical transients

ATel #9913; A. Cikota (ESO), K. W. Smith (QUB), M. Magee (QUB), E. Kankare (QUB), R. Cartier (Southampton), K. Maguire (QUB), C. Inserra (QUB), S. J. Smartt (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann), J. Tonry (IfA, Univ. of Hawaii), B. Stalder (IfA, Univ. of Hawaii), L. Denneau (IfA, Univ. of Hawaii), A. Heinze (IfA, Univ. of Hawaii), H. Weiland (IfA, Univ. of Hawaii), A. Rest (STScI)
on 29 Dec 2016; 17:06 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Erkki Kankare (e.kankare@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 supplied by the ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680), the ESA Gaia Photometric Science Alerts Team and DPAC (http://gsaweb.ast.cam.ac.uk/alerts), and from the IAU TNS list (see https://wis-tns.weizmann.ac.il/). All observations were performed on the ESO New Technology Telescope at La Silla on 2016 12 28, 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 
ATLAS16ead   | AT2016izi     | 05 12 52.66 | -12 38 14.6 | 20161221   | ATLAS   |   17.26  | 0.000 | Stellar | -        | (1) 
ATLAS16eah   |               | 07 14 54.22 | +06 52 30.7 | 20161222   | ATLAS   |   17.90  | 0.000 | Stellar | -        | (2) 
Gaia16cfp    | SN2016jbs     | 09 22 08.57 | -09 45 17.5 | 20161225   | Gaia    |   18.96  | 0.055 | Ia      | -3       | (3) 
Gaia16cfe    | AT2016jbc     | 09 47 37.80 | -36 25 58.0 | 20161223   | Gaia    |   17.72  | 0.000 | Stellar | -        | (4) 
Gaia16cex    | AT2016jaj     | 10 03 52.72 | -42 20 17.4 | 20161222   | Gaia    |   18.52  | 0.000 | Stellar | -        | (5) 
             | SN2016jby     | 10 52 25.89 | +10 32 38.1 | 20161227   | POSS    |   18.00  | 0.022 | II      | young    | (6) 
Gaia16cep    | SN2016izv     | 10 06 45.49 | -06 11 45.8 | 20161221   | Gaia    |   18.36  | 0.063 | Ia      | +11      | (7) 
 

(1) Blue continuum with Balmer series visible in absorption. (2) Blue continuum with H alpha and He II 4686 emission lines. (3) SNID provides good matches to normal SNe Ia a few days before maximum. (4) Blue continuum with Balmer series visible in absorption. (5) Low signal-to-noise spectrum with Balmer emission lines. (6) Discovered by R. Gagliano of the Puckett Observatory Supernova Search in NGC3438 (approx D = 90Mpc). Blue continuum with narrow H-alpha at z=0.022, consistent with being in NGC3438. Likely young type II or type IIn. (7) SNID provides good matches to normal SNe Ia approximately two weeks post maximum.