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PESSTO spectroscopic classification of optical transients

ATel #9972; C. Barbarino, F. Taddia, J. Sollerman, E. Karamehmetoglu, A. Nyholm (OKC), M. Fraser (UCD), Joe Anderson (ESO), C. Inserra, E. Kankare, K. Maguire, D. Young, K. W. Smith, S. J. Smartt (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron, I. Manulis (Weizmann), J. Tonry, B. Stalder, L. Denneau, A. Heinze, H. Weiland (IfA, Univ. of Hawaii) and A. Rest (STScI).
on 18 Jan 2017; 16:15 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Cristina Barbarino (cristina.barbarino@astro.su.se)

Subjects: Optical, Supernovae

PESSTO, the 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 ) 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 January 17, 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 
Gaia17adb   | SN2017jy  | 04:32:44.43  | -05:53:30.4 |  20170116  | Gaia   | 17.6     | 0.043  | Ia     | +4 to +7 d   | (1) 
Gaia17acv   | SN2017jr  | 08:33:49.81  | -25:02:24.5 |  20170114  | Gaia   | 18.8     | 0.063  | Ia     | At max       | (2) 
ATLAS17agh  |           | 11:10:27.18  | +28:41:42.4 |  20170104  | ATLAS  | 18.9     | 0.030  | Ia     | +4 to +7 d   | (3) 

(1) Host redshift from 2MASS.
(2) Host redshift from galaxy lines.
(3) Host redshift from SDSS. Spectroscopic SN age estimate consistent with ATLAS light curve.