ePESSTO spectroscopic classification of optical transients
ATel #11309; J. Palmerio (IAP), K. W. Smith (QUB), E. Kankare (QUB), C. Barbarino (Stockholm), M. Fraser (UCD), Z. Kostrzewa-Rutkowska (SRON/RU), G. Leloudas (DARK), A. Pastorello (Padova), M. Gromadzki (Warsaw), C. Inserra (Southampton), K. Maguire (QUB), S. J. Smartt (QUB), M. Sullivan (Southampton), S. Valenti (UC Davis), O. Yaron (Weizmann), D. Young (QUB), I. Manulis (Weizmann), J. Tonry, L. Denneau., A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI), O. McBrien (QUB)
on 16 Feb 2018; 17:23 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Erkki Kankare (e.kankare@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 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 2018 February 15, 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
ASASSN-18cl | AT2018ts | 11 09 14.7 | -12 55 52.4 | 20180213 | ASAS-SN | 19.0 | 0.026 | ? | - | (1)
Gaia18afs | SN2018jq | 12 56 48.4 | +03 53 27.2 | 20180121 | Gaia | 17.9 | 0.025 | Ib | > +20 | (2)
(1) Nuclear transient. Also known as ATLAS18mbu; ATLAS light curve is erratic and has detections for ~70 days. The spectrum shows ~3600 km/s Balmer emission lines which likely arise from an AGN host. However, a circum-nuclear Type II supernova or a TDE are not fully excluded.
(2) Redshift from SDSS.
