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ePESSTO spectroscopic classification of optical transients

ATel #11294; K. Smith (QUB), J. Palmerio (IAP), D. O'Neill (QUB), C. Barbarino (Stockholm), M. Fraser (UCD), Z. Kostrzewa-Rutkowska (SRON/RU), G. Leloudas (DARK), A. Pastorello (Padova), 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 13 Feb 2018; 18:50 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Kate Maguire (kate.maguire@qub.ac.uk)

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 supernova classifications. Targets are from the ESA Gaia Photometric Science Alerts Team and DPAC (http://gsaweb.ast.cam.ac.uk/alerts), 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 from the IAU Transient Name Server (see https://wis-tns.weizmann.ac.il/). All observations were performed on the ESO New Technology Telescope at La Silla on 2018 Feb 12, 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 
Gaia18adx   | SN2018hi | 08 53 40.57 | -25 03 32.04 |  20180115  | Gaia    |  17.92     | 0.022 |  II  | > +20d  | 
ASASSN-18cb | SN2018pq | 12 55 31.29 | -50 03 16.96 |  20180208  | ASAS-SN |  15.70     | 0.006 |  II  | > +20d  | 
C16-0060    | AT2018qb | 08 56 50.98 | +21 07 38.51 |  20180124  | TNS     |  18.23     | 0.082 |  -   |    -    | (1) 
ASASSN-18ce | SN2018rw | 06 09 39.25 | -33 35 24.72 |  20180210  | ASAS-SN |  18.20     | 0.037 |  Ia  | at max. | (2) 
 

(1) Spectrum shows only a continuum with host galaxy lines.
(2) Best spectral matches are to SN 1991bg and SN 1997cn around maximum light with a Si II 6355 A velocity of ~6000 km/s. The spectrum also displays a strong C II 6850 A feature with a velocity of ~4000 km/s.