ePESSTO spectroscopic classification of optical transients

ATel #10650; J. Lyman (Univ. of Warwick), D. Homan (Univ. of Edinburgh), M. Magee (QUB), M. T. Botticella (INAF-Capodimonte), K. Maguire (QUB), C. Inserra (Southampton), E. Kankare (QUB), S. J. Smartt (QUB), K. W. Smith (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron (Weizmann), I. Manulis (Weizmann), D. Young (QUB), D. Wright (QUB), K. C. Chambers, H. Flewelling, M. Huber, T. Lowe. E. Magnier, A. Schultz, C. Waters, R. J. Wainscoat, M. Wilman (IfA, Univ. Hawaii), L. Tartaglia (UA, UC Davis), D. Sand, S. Wyatt (UA).
on 17 Aug 2017; 18:34 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Mark Magee (mmagee37@qub.ac.uk)

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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. Targets were supplied by Pan-STARRS Survey for Transients (see Chambers et al. 2016, arXiv:1612.05560, and http://pswww.ifa.hawaii.edu ), 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 ), the D<40 Mpc (DLT40) one day cadence SN search (http://dark.physics.ucdavis.edu/dlt40/DLT40), 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 2017 08 16, 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 
Gaia17byh   | SN2017fwm | 19 12 51.95 | -60 22 58.3 |  20170731  |  Gaia   |  20.55   | 0.016 | Ic     | +13   | (1) 
PS17ecp     |           | 01 24 42.99 | -40 36 36.0 |  20170813  |  PS1    |  19.86   | 0.087 | Ia     | +30   | 
PS17ebc     |           | 01 50 20.98 | -33 38 24.5 |  20170813  |  PS1    |  19.16   | 0.256 | AGN    | -     | 
PS17ecf     |           | 01 22 49.50 | -13 10 23.4 |  20170810  |  PS1    |  19.68   | 0.056 | Ia     | +22   | 
PS17edh     |           | 02 54 07.09 | -41 37 31.9 |  20170815  |  PS1    |  18.41   | 0.146 | AGN    | -     |  
ASASSN-17kw | SN2017gbk | 06 11 11.71 | -33 21 00.9 |  20170809  |  ASASSN |  16.50   | 0.033 | Ia     | +0    |  
PS17ecr     |           | 01 48 27.42 | -31 52 07.9 |  20170812  |  PS1    |  19.81   | 0.152 | Gal    | -     | 
ASASSN-17ks | SN2017gat | 23 53 17.02 | -32 46 32.8 |  20170808  |  ASASSN |  16.75   | 0.023 | Ic     | +0    | (1) 
PS17ebv     |           | 01 04 32.99 | -15 52 08.3 |  20170810  |  PS1    |  20.02   | 0.151 | Gal    | -     | (2) 
Gaia17cbp   | AT2017gci | 06 46 45.02 | -27 14 55.8 |  20170812  |  Gaia   |  17.13   | 0.007 | SLSN-I | young | (3) 
DLT17cg     | SN2017gaw | 01 15 35.23 | -00 50 40.3 |  20170813  |  DLT40  |  18.19   | 0.038 | II     | young | (4) 

(1) Redshift from host galaxy
(2) Low S/N spectrum
(3) Blue continuum transient. Offset from nearby spiral ESO 490-G 044 by ~1.9 arc minutes
but this is likely chance coincidence as there is a faint source in the Pan-STARRS1 images
at the transient position. Absorption lines match the SLSN SN2010gx (Pastorello et al. 2010), at z = 0.09. Further data will be taken to confirm
(4) Blue, featureless continuum