Spectroscopic Classifications of Optical Transients with the Lick Shane telescope
ATel #14312; T. Hung, G. Dimitriadis, R. J. Foley (UCSC)
on 11 Jan 2021; 18:40 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Georgios Dimitriadis (gdimitri@ucsc.edu)
Subjects: Optical, Supernovae
We report the following classifications of optical transients from spectroscopic observations with the Kast spectrograph on the Shane telescope. Targets were supplied by ZTF (reported by ALeRCE), YSE and ATLAS. All observations were made on 2021 Jan 11 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Name | IAU Name | RA (J2000) | Dec (J2000) | z | Type | Phase | Notes
ZTF20acyxrez | AT2020adkc | 10:16:19.62 | -01:30:58.63 | 0.092 | Ia | +7d | (1)
PS20nxr | AT2020aeqm | 09:01:03.47 | +23:17:09.89 | 0.042 | Ia | -4d | (2)
ATLAS20bjuc | AT2020aeqp | 12:29:21.75 | +31:15:16.26 | 0.061 | Ia | +5d | (3)
ZTF21aaafjad | AT2021at | 07:47:08.59 | +43:29:21.17 | 0.111 | Ia | -3d | (4)
PS21ac | AT2021js | 02:36:57.41 | +41:26:37.07 | | CV | |
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 Si II 6355 velocity of -10,200 km/s. (2) We measure an Si II 6355 velocity of -12,100 km/s. (3) We measure an Si II 6355 velocity of -11,700 km/s. (4) Good fits with SNe Ia 99aa and 91T-like spectra a few days before maximum. We measure an Si II 6355 velocity of -9,900 km/s.
