SALT spectroscopy of a SN Ia in LEDA 499631, a galaxy inside the error region for FRB181228
ATel #12343; D. A. H. Buckley (South African Astronomical Observatory), M. Gromadzski (Warsaw University Astronomical Observatory), E. Gorbovskoy, V. Lipunov (Lomonosov Moscow State University, SAI), R. Kuhn (SAAO)
on 30 Dec 2018; 23:33 UT
Credential Certification: David Buckley (dibnob@saao.ac.za)
Subjects: Optical, Supernovae
SALT spectroscopy of the MASTER transient (Gorbovskoy et al., ATel #12338), detected inside the localization region of FRB181228 (Farah et al., ATel #12335), was undertaken on 2018 December 29.808 (HJD 2458482.3079). The transient, which is in the galaxy LEDA 499631 (2MASS J06092523-4732490), was observed for 1200 s with the SALT Robert Stobie Spectrograph (RSS) using the PG900 VPH grating covering the spectral region 3445-7400 Å at a resolution of R = 1040. The spectrum was fitted using the SNID code (Blondin & Tonry 2007, ApJ, 666, 1024), with the best match being a SN Type Ia, 10 days post-maximum, with a redshift in the range 0.025-0.031. We conclude this SNe is unlikely to be associated with FRB181228.
