ePESSTO spectroscopic classification of optical transients
ATel #11641; O. McBrien, P. Clark, D. O'Neill, K. W. Smith (QUB), R. Cartier (CTIO), J. Lyman (Warwick), T.-W. Chen (MPE), J. Tonry, L. Denneau., A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI), S. J. Smartt, D. R. Young (QUB), D. E. Wright (Univ. of Minnesota), C. Inserra (Southampton), E. Kankare , K. Maguire, S. J. Smartt (QUB), O. Yaron (Weizmann), D. R. Young (QUB), I. Manulis (Weizmann)
on 13 May 2018; 16:53 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ken Smith (k.w.smith@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 May 12, 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
ATLAS18ofx | AT2018biy | 16 47 05.71 | -07 18 56.0 | 20180508 | ATLAS | 18.1 | | star | |
Gaia18bet | SN2018biq | 21 21 50.79 | -61 24 29.9 | 20180509 | Gaia | 18.9 | 0.10 | Ia | +4 to +7 | (1)
ATLAS18oat | SN2018bhs | 16 34 15.76 | +26 53 22.4 | 20180509 | ATLAS | 19.2 | 0.07 | Ia | -7 to -4 | (2)
ATLAS18oas | SN2018bht | 16 26 29.80 | +17 19 14.1 | 20180509 | ATLAS | 19.2 | 0.09 | Ia | -3 to +3 |
ATLAS18oan | AT2018bhn | 17 57 27.07 | +09 12 02.5 | 20180509 | ATLAS | 17.8 | | ? | | (3)
Gaia18bef | AT2018bgu | 19 09 06.64 | -25 38 41.9 | 20180506 | Gaia | 18.7 | | ? | | (3)
Gaia18bdz | SN2018bgk | 19 48 39.14 | -26 45 41.6 | 20180504 | Gaia | 18.8 | 0.09 | Ia | +8 to +10 |
(1) Low SNR spectrum.
(2) SN2018bhs was observed as part of the GREAT survey (Chen et al. ATel #10510), having a black body temperature of T_BB ~ 14100+/-400 K obtained from the photometry taken on May 12, 2018 with griz=18.62,18.75,18.99,19.16 mag.
(3) Very noisy spectrum. Featureless continuum.