ePESSTO spectroscopic classification of optical transients

ATel #10313; C. P. Gutierrez, R. Cartier, M. Sullivan (Southampton), K. Maguire (QUB), T. W. Chen (MPI), L. Galbany (Pittsburgh), C. Inserra (Southampton), E. Kankare (QUB), S. J. S. martt (QUB), K. W. Smith (QUB), S. Valenti (UC Davis), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann), J. Tonry, B. Stalder, L. Denneau., A. Heinze, H. Weiland (IfA, Univ. of Hawaii), A. Rest (STScI)
on 22 Apr 2017; 21:10 UT
Credential Certification: Regis Cartier (rgcartier@gmail.com)

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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. Target were supplied by the the ATLAS survey (see Tonry et al., 2011, PASP, 123, 58), 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 from the ESA Gaia Photometric Science Alerts Team and DPAC (http://gsaweb.ast.cam.ac.uk/alerts). The observations were performed on the ESO New Technology Telescope at La Silla on 2017 April 21, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024). 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 
ASASSN-17fg | SN2017dfv | 05:00:36.04 | -62:04:13.3 | 2017-04-19 | ASASSN | 16.60    | 0.028 | SN Ia | At max     | 
ATLAS17esd  | SN2017dfu | 08:19:09.20 | -16:29:44.5 | 2017-04-16 | ATLAS  | 18.14    | 0.045 | SN Ia | -7 to -4 d | 
ASASSN-17fe | SN2017dfo | 09:20:38.11 | -29:57:02.3 | 2017-04-12 | ASASSN | 17.74    | 0.036 | SN Ia | At max     | (1) 
ATLAS17eru  | SN2017dft | 10:57:32.05 | -14:50:06.0 | 2017-04-16 | ATLAS  | 18.14    | 0.025 | SN Ia | At max     | (2) 
PS17cke     | AT2017des | 12:34:18.90 | +06:28:27.0 | 2017-04-16 | PS1    | 19.69    | 0.007 |       |            | (3) 
ATLAS17eac  | SN2017dcc | 12:49:04.89 | -12:12:22.4 | 2017-04-16 | ATLAS  | 17.07    | 0.043 | SN Ic | +18 d      | (4) 
Gaia17bao   | SN2017def | 15:22:28.90 | +27:42:25.8 | 2017-04-17 | GAIA   | 18.88    | 0.071 | SN Ia | +25 d      | 
Gaia17bbh   | SN2017dfn | 19:52:16.35 | -26:10:27.7 | 2017-04-18 | GAIA   | 17.79    | 0.048 | SN Ia | At max     |	 
Gaia17bay   | AT2017dfe | 22:37:24.25 | -39:04:55.0 | 2017-04-02 | GAIA   | 20.56    |       |       |            | (5) 

 
(1) Spectrum similar to a 91T-like SN. 
(2) Spectrum similar to a 91bg-like SN. 
(3) Transient not visible in a deep acquisition image. The redshift is estimated from galaxy features in the spectrum close to, or at, the transient site. 
(4) Spectrum similar to SN 1998bw, a SN Ic with broad lines associated to GRB 980425. The phase corresponds to the estimated time since the explosion using SNID. 
(5) Blue continuum dominated spectrum.