Spectroscopic Classifications of Optical Transients with Keck I + LRIS
ATel #11707; C. Rojas-Bravo, M. R. Siebert, R. J. Foley (UCSC)
on 11 Jun 2018; 22:10 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ryan Foley (foley@ucsc.edu)
Subjects: Optical, Supernovae
We report the following classifications of optical transients from spectroscopic observations with the LRIS spectrograph on the Keck I telescope. Targets were supplied by ASAS-SN, Gaia, and POSS. All observations were obtained on 2018 Jun 11 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Name | IAU Name | RA (J2000) | Dec (J2000) | z | Type | Phase | Notes
| AT2018cew | 23:52:24.20 | +28:46:30.60 | 0.022 | Ic | +7 d |
Gaia18blf | AT2018cho | 00:13:26.52 | +17:29:19.57 | 0.017 | II | +40 d | (1)
ASASSN-18mb | AT2018cif | 22:03:00.93 | +02:35:51.31 | 0.032 | Ia | +0 d | (2)
Notes:
When the redshift is given to 2 decimal places, it is derived from the SN spectrum. Otherwise, the redshift is determined from the host galaxy.
(1) We measure an H-alpha velocity of -5900 km/s.
(2) We measure an Si II 6355 velocity of -10,600 km/s.
