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PESSTO spectroscopic classification of optical transients

ATel #9889; A. Cikota (ESO), K. W. Smith (QUB), 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), L. Wyrzykowski (Warsaw Observatory, Poland)
on 21 Dec 2016; 17:02 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 were supplied by OGLE-IV Real-time Transient Search (Wyrzykowski et al., 2014 arxiv:1409.1095; http://ogle.astrouw.edu.pl/ ) 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 20, 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 
Gaia16cah    | SN2016itl     | 02 13 03.16 | -33 38 06.0 | 20161203   | Gaia    |   17.86  | 0.043 | Ia           | +3      | (1) 
ASASSN-16oz  | SN2016iyv     | 09 00 13.36 | -13 38 03.1 | 20161220   | ASASSN  |   16.80  | 0.031 | Ia 91T-like  | -4      | (2) 
Gaia16cdf    | SN2016ixf     | 10 39 44.56 | +15 02 04.7 | 20161217   | Gaia    |   18.14  | 0.068 | Ia           | max     | (3) 
Gaia16cdp    | AT2016iym     | 15 03 00.86 | -67 42 13.3 | 20161217   | Gaia    |   16.82  | 0.000 | Stellar      | -       |  
Gaia16cds    | AT2016iyp     | 12 02 49.63 | -54 22 47.0 | 20161219   | Gaia    |   16.05  | 0.000 | Stellar      | -       |  
Gaia16cdn    | SN2016iyk     | 10 41 06.40 | +06 31 42.8 | 20161217   | Gaia    |   17.99  | 0.016 | II           | max     | (4) 
OGLE16fxq    |               | 04 51 38.22 | -66 48 49.3 | 20161211   | OGLE    |   19.14  | 0.000 | Stellar      | -       | (5)  
 

(1) SNID provides good matches to both normal and 91T-like SNe Ia a few days post-maximum.
(2) SNID provides good matches to 91T-like SNe Ia a few days before maximum.
(3) SNID provides good matches to normal SNe Ia around maximum.
(4) SNID provides good matches to SNe II around maximum.
(5) Hostless object, near LMC. Relatively blue continuum, with one absorption feature at 4300Angs. This is broad and is probably G-band absorption. This suggests a stellar variable/outburst. And the object has now faded in further OGLE imaging.