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ePESSTO spectroscopic classification of optical transient

ATel #11024; Z. Kostrzewa-Rutkowska (SRON/RU), K. M. Lopez (SRON/RU), G. Cannizzaro (SRON/RU), P. G. Jonker (SRON/RU), F. Onori (SRON/RU), T.-W. Chen (MPE), M. Fraser (University College Dublin), J. Sollerman (OKC), C. Inserra (Southampton), E. Kankare (QUB), K. Maguire (QUB), S. J. Smartt (QUB), K. W. Smith (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann)
on 29 Nov 2017; 16:06 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Francesca Onori (f.onori@sron.nl)

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 classifications. Targets were supplied by 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 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 Nov 28, 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 
 
ASASSN-17pv    | AT2017imy | 23:37:37.62 |-60:43:57.22 |  20171125  |  ASAS-SN   |  17.6   | 0     |  CV  |         | (1) 
 
Gaia17dbu      | SN2017ipa | 06:37:58.15 |-15:22:00.59 |  20171126  |  Gaia      |  18.34  | 0.029 |  II  | pre-max | (2) 
 

(1) Halpha, Hbeta at redshift 0.
(2) Blue spectrum and weak broad Balmer lines consistent with a young type II SN <10 days after explosion. Redshift from the narrow Halpha.