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ePESSTO spectroscopic classification of optical transients

ATel #10661; J. Lyman (Univ. of Warwick), D. Homan (Univ. of Edinburgh), G. Leloudas (DARK), M. Fraser (UCD), K. Maguire, E. Kankare, S. J. Smartt, K. W. Smith, D. Young (QUB), C. Inserra, M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron, I. Manulis (Weizmann), M. Dennefeld (IAP), M. Berton (Padova), D. Wright (Minnesota), K. C. Chambers, H. Flewelling, M. Huber, T. Lowe. E. Magnier, A. Schultz, C. Waters, R. J. Wainscoat, M. Wilman, J. Tonry, B. Stalder, L. Denneau., A. Heinze, H. Weiland (IfA, Univ. of Hawaii), A. Rest (STScI)
on 22 Aug 2017; 16:26 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Giorgos Leloudas (giorgos@dark-cosmology.dk)

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 Pan-STARRS Survey for Transients (see Chambers et al. 2016, arXiv:1612.05560, and http://pswww.ifa.hawaii.edu ) and the ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680). All observations were performed on the ESO New Technology Telescope at La Silla on 2017-08-21, 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 
ATLAS17jqo  | AT2017gfx | 14 25 17.50| -26 14 54.0 |  20170816  | ATLAS  |   18.2   | 0     | Stellar |  -        | (1) 
ATLAS17jqk  | AT2017ggj | 18 48 15.19| +17 17 10.4 |  20170818  | ATLAS  |   17.8   | 0     | Stellar |  -        | (2) 
ATLAS17jqb  | AT2017gfv | 19 52 47.35| -06 11 33.2 |  20170815  | ATLAS  |   17.6   | 0     | Stellar |  -        | (3) 
ATLAS17jqj  | AT2017gfy | 00 31 35.16| -26 11 16.6 |  20170816  | ATLAS  |   18.5   | 0.063 | Ia      |  max      |  
PS17ecn     | SN2017ggi | 00 58 52.76| -35 51 49.8 |  20170710  | PS1    |   18.1   | 0.039 | Ib      |  post-max |  
PS17ebd     | AT2017ggh | 01 58 09.63| -32 58 33.9 |  20170809  | PS1    |   19.7   | 0.355 | AGN     |  -        | (4) 
PS17ebj     | SN2017ggg | 01 29 35.90| -19 07 05.6 |  20170810  | PS1    |   19.5   | 0.11  | Ia      |  +7       | 

(1) H-alpha in emission and higher order Balmer lines in absorption at z=0, superimposed on a blue continuum.
(2) Balmer lines seen in absorption at z=0, superimposed on blue continuum.
(3) Balmer lines seen in emission at z=0, superimposed on blue continuum. We also detect strong emission from He II at 4686 A.
(4) AGN of type 1.5.