[ Previous | Next | ADS ]

ePESSTO spectroscopic classification of optical transients

ATel #11052; C. Angus (Southampton), C. Frohmaier (Portsmouth), R. E. Firth (Southampton), J. Anderson (ESO), C. Barbarino (Stockholm), M. Dennefeld (IAP/UMPC), C. Inserra (Southampton), E. Kankare (QUB), K. Maguire (QUB), S. Smartt (QUB), O. Yaron (Weizmann), D. Young (QUB), J. Tonry, B. Stalder, L. Denneau, A. Heinze, H. Weiland (IfA, Univ. of Hawaii), A. Rest (STScI), K. W. Smith (QUB)
on 12 Dec 2017; 17:48 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Robert Firth (r.e.firth@soton.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 from 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 2017 Dec 11, 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 
Gaia17dah   | SN2017imj | 00 10 17.05| -40 41 00.0 |  20171017  |  Gaia  |  19.35   | 0.047 |  II  | -4d   | (1) 
ATLAS17nmp  | SN2017itp | 03 00 15.20| -10 31 47.2 |  20171028  |  ATLAS |  20.93   | 0.057 |  Ia  | +4d   | 
Gaia17dee   | SN2017its | 05 36 36.50| -31 43 18.1 |  20171211  |  Gaia  |  18.37   | 0.037 |  II  | +10d  | (2) 
Gaia17dei   | SN2017itw | 10 10 33.19| -30 30 35.8 |  20171205  |  Gaia  |  18.73   | 0.079 |  Ia  | +7d   | 
Gaia17dep   | SN2017iue | 10 56 09.62| -07 43 43.6 |  20171201  |  Gaia  |  18.31   | 0.052 |  II  |   ?   | (3) 
ATLAS17nnw  | AT2017ivc | 06 36 29.06| -30 25 42.3 |  20171013  |  ATLAS |  15.95   | 0.0   |  ?   |   ?   | (4) 

(1) SNID provides fits consistent with young SNe Type II though object appears to have a long rise time of at least 50 days
(2) SNID provides good matches to the SNe IIp SN2004et
(3) Spectrum is consistent with a young SNe Type II
(4) Spectrum is a red continuum with H alpha emission, suggesting galactic origin