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ePESSTO spectroscopic classification of optical transients

ATel #10454; G. Pignata (UNAB/MAS), L. Wang (CASSACA), L. Galbany (Pitt), J. P. Anderson (ESO), Regis Cartier, C. Inserra (Southampton), E. Kankare, K. Maguire, S. J. Smartt, K. W. Smith (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann), D. Wright, 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 2 Jun 2017; 19:43 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Lluis Galbany (lluisgalbany@gmail.com)

Subjects: Optical, Supernovae

Referred to by ATel #: 10463, 10505

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 ESA Gaia Photometric Science Alerts Team and DPAC (http://gsaweb.ast.cam.ac.uk/alerts), the ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680), Pan-STARRS Survey for Transients (see Chambers et al. 2016, arXiv:1612.05560, and http://pswww.ifa.hawaii.edu ), and 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 ). All observations were performed on the ESO New Technology Telescope at La Silla on 2017 June 1, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). The classifications were done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024). The 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 
ATLAS17fko  | SN2017eby | 14:38:50.74 | +14:44:25.9 | 2017-04-01 | ATLAS  | 18.90    | 0.081 |Ia-CSM/IIn| >30   | (1) 
ATLAS17flj  | SN2017eca | 16:04:15.70 | +17:57:27.4 | 2017-05-12 | ATLAS  | 18.36    | 0.032 | IIP      |  +4   | (2) 
PS17dcw     | SN2017ehp | 15:44:28.47 | -07:28:17.3 | 2017-05-15 | PS     | 18.82    | 0.080 | Ia       |  +9   | 
Gaia17bji   | SN2017eir | 23:51:49.57 | -04:45:45.1 | 2017-05-25 | Gaia   | 18.87    | 0.087 | Ia       |  +3   | 
Gaia17bjp   | SN2017eiy | 23:49:28.27 | -30:25:04.6 | 2017-05-26 | Gaia   | 18.92    | 0.047 | IIb      |  -5   | 
ASASSN-17hb | SN2017ejw | 01:12:34.24 | +00:17:31.1 | 2017-05-31 | ASASSN | 16.00    | 0.019 | Ia       |  -1   | 
ATLAS17ftw  | SN2017ejy | 16:06:56.41 | +15:40:44.9 | 2017-05-26 | ATLAS  | 18.52    | 0.038 | Ia       |  -1   | 
ATLAS17fts  | SN2017eje | 16:51:09.61 | +29:04:35.4 | 2017-05-04 | ATLAS  | 14.27    | 0.068 | II       |  +4   | 
Gaia17bjx   |           | 00:08:54.38 | -30:02:49.0 | 2017-05-27 | Gaia   | 18.61    | -     | Unk      |   -   | (3) 
ATLAS17ftx  |           | 18:59:13.05 | +24:00:41.8 | 2017-05-20 | ATLAS  | 15.10    | -     | Star     |   -   | (4) 
ATLAS17fqe  |           | 16:06:40.28 | -33:32:50.8 | 2017-05-21 | ATLAS  | 16.66    | -     | Star     |   -   | (5) 

(1) Already classified in TNS. Best fit to SN 2005gj at +46d.
(2) Low expansion velocity. The IIP classification is confirmed by the ATLAS light curve showing a plateau.
(3) Spectrum dominated by host galaxy light
(4) Blue continuum with Na and Balmer lines
(5) Red continuum with Na and Balmer lines