ePESSTO spectroscopic classification of optical transients
ATel #11315; K. W. Smith (QUB), J. Palmerio (IAP), M. Magee (QUB), C. Barbarino (Stockholm), M. Fraser (UCD), Z. Kostrzewa-Rutkowska (SRON/RU), G. Leloudas (DARK), C. Inserra (Southampton), E. Kankare (QUB), 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 17 Feb 2018; 18:58 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Mark Magee (mmagee37@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 ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680), 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 02 16, 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
ATLAS18mbw | SN2018vr | 01 40 56.98 | -34 16 46.8 | 20180204 | ATLAS | 18.87 | 0.067 | Ia | max | (1)
ATLAS18ltx | AT2018mr | 14 28 11.36 | +16 28 52.0 | 20180131 | ATLAS | 17.72 | 0.560 | QSO | - | (2)
Gaia18alc | AT2018vj | 16 48 39.88 | -62 35 50.2 | 20180208 | Gaia | 18.80 | - | CV | - | (3)
ATLAS18mbt | AT2018sm | 11 25 13.64 | -22 42 04.6 | 20180121 | ATLAS | 19.10 | 0.061 | Galaxy | - | (4)
ASASSN-18co | SN2018tt | 09 54 23.20 | -14 39 18.2 | 20180213 | ASASSN | 18.05 | 0.060 | Ia | max | (1)
ATLAS18ebx | SN2018ke | 13 08 39.52 | -41 27 16.0 | 20180117 | ATLAS | 17.68 | 0.010 | II | young | (1)
(1) Redshift from NED.
(2) Spectrum shows a blue continuum with Mg II emission around ~4350 A and provides a good match to a QSO template.
(3) Blue continuum. Absorption features consistent with Balmer series at z = 0. Likely stellar.
(4) Redshift from nebular emission lines. ATLAS shows a flat light curve for the past ~1 month.
