Spectroscopic Classifications of Optical Transients with the Lick Shane 3-m telescope
ATel #12168; C. D. Kilpatrick, B. Garza, J. Decker, M. R. Siebert, R. J. Foley (UCSC)
on 4 Nov 2018; 19:44 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ryan Foley (foley@ucsc.edu)
Subjects: Optical, Supernovae
Referred to by ATel #: 12213
We report the following classifications of optical transients from spectroscopic observations with the Kast spectrograph on the Shane telescope. Targets were supplied by ATLAS and ASAS-SN. All observations were made on 2018 Nov 4 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Name | IAU Name | RA (J2000) | Dec (J2000) | z | Type | Phase | Notes
ATLAS18yct | AT2018hru | 23:37:12.05 | +16:02:03.42 | 0.06 | Ia | +1 d | 1
ATLAS18ycv | AT2018hrv | 01:08:41.31 | +35:46:21.24 | 0.060 | Ia | +0 d | 2
ASASSN-18yw | AT2018hsy | 09:30:29.87 | +16:20:37.21 | 0.028 | Ia | +5 d | 3
ASASSN-18yy | AT2018hts | 23:24:32.96 | +17:05:35.30 | 0.04 | Ia | +0 d | 4
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 a Si II 6355 velocity of -11,500 km/s.
(2) We measure a Si II 6355 velocity of -12,300 km/s. Redshift determined from a probable Na D absorption feature consistent with redshift derived from SN spectral features.
(3) We measure a Si II 6355 velocity of -11,000 km/s.
(4) We measure a Si II 6355 velocity of -10,000 km/s.