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PESSTO spectroscopic classification of optical transients

ATel #10210; A. Hamanowicz (Warsaw), F. Onori (SRON), M. Fraser (UCD), J. Anderson (ESO), C. Inserra (Southampton), E. Kankare (QUB), I. Manulis (Weizmann), K. Maguire (QUB), S. J. Smartt (QUB), K. W. Smith (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron (Weizmann), D. Young (QUB), J. Tonry, B. Stalder, L. Denneau., A. Heinze, H. Weiland (IfA, Univ. of Hawaii), A. Rest (STScI)
on 25 Mar 2017; 14:33 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Morgan Fraser (morgan.fraser@ucd.ie)

Subjects: Optical, Supernovae, Transient

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 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 ATLAS survey (see Tonry et al., 2011, PASP, 123, 58) and from 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 March 24, 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 
Gaia17aqr   | AT2017ceq | 10:57:39.76 | -41:58:33.7 | 20170309   | Gaia    | 20.4     | ?     | ?    | ?     | (1) 
ATLAS17czh  | SN2017cin | 16:14:00.65 | +26:54:58.6 | 20170317   | ATLAS   | 18.3     | 0.033 | IIn  | 0d    | (2) 
ASASSN-17eb | SN2017cju | 15:38:34.06 | +13:20:52.4 | 20170323   | ASASSN  | 17.8     | 0.05  | Ia   | 0d    | (3) 
ATLAS17byq  | SN2017cka | 17:07:47.34 | +09:49:20.8 | 20170314   | ATLAS   | 17.6     | 0.04  | Ia   | 10d   | 

(1) Barely detected on acquisition image, implying the transient is now significantly fainter than the last Gaia magnitude (G=17). Transient is 16 degrees from the Galactic plane, and has a lightcurve which is consistent with a dwarf nova.
(2) Narrow Halpha on a blue continuum.
(3) Consistent with the classification in ATel #10207.