ePESSTO spectroscopic classification of optical transients
ATel #11662; O. McBrien, P. Clark, M. Magee (QUB), J. Anderson (ESO), L. Galbany (U. Pitt), Z. Kostrzewa-Rutkowska (SRON/RU), G. Leloudas (DARK), M. Gromadzki (Warsaw), P. Jonker (SRON), F. Onori (SRON), A. Pastorello (INAF-OAPd), C. Inserra (Southampton), E. Kankare (QUB), K. Maguire (QUB), S. J. Smartt (QUB), O. Yaron (Weizmann), D. R. Young (QUB), I. Manulis (Weizmann), J. Tonry, L. Denneau, A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI), K. W. Smith (QUB), D. E. Wright (Univ. of Minnesota)
on 22 May 2018; 16:19 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), 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 05 21, 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
Gaia18bgj | AT2018buo | 18 40 50.17 | -47 40 46.2 | 20180515 | Gaia | 17.66 | 0.061 | ? | ? | (1), (2)
Gaia18bgg | SN2018bul | 18 42 18.92 | -55 39 11.7 | 20180515 | Gaia | 18.63 | 0.056 | Ia | max | (1)
ATLAS18pns | SN2018but | 14 34 47.00 | -19 25 31.3 | 20180519 | ATLAS | 18.67 | 0.048 | Ia | -3 | (1)
ATLAS18nyv | SN2018bhm | 16 46 40.23 | +10 48 40.1 | 20180426 | ATLAS | 18.51 | 0.055 | Ia | +13 |
(1) Redshift from NED.
(2) Spectrum shows hydrogen and helium emission features. The object is possibly an AGN, however a TDE or a circum-nuclear type II SN are not fully excluded.
