Spectroscopic Classifications of Optical Transients with the Lick Shane telescope

ATel #15218; K. Taggart, C. Rojas-Bravo, K. W. Davis, R. J. Foley (UCSC)
on 9 Feb 2022; 22:54 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Kirsty Taggart (k.taggart@ucsc.edu)

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We report the following classifications of optical transients from spectroscopic observations with the Kast spectrograph on the Shane 3-m telescope at Lick Observatory. The targets were supplied by ATLAS, Gaia, and Pan-STARRS. All observations were made on 2022 Feb. 1 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name         | IAU Name | RA (J2000)   | Dec (J2000)  |  z    | Type | Phase | Notes 
Gaia22abd    | 2022aj   | 14:56:08.310 | -27:45:37.58 | 0.03  |  Ia  |  +20  | (1) 
PS22ny       | 2022wr   | 12:22:13.120 | +05:13:25.39 | 0.08  |  Ia  |  +3   | (2) 
PS22ub       | 2022aiw  | 07:19:59.932 | +38:09:33.57 | 0.15  |  Ia  |  -1   | (3) 
ATLAS22csv   | 2022akc  | 10:19:07.979 | +05:41:28.75 | 0.074 |  Ia  |  +5   | (4) 
ATLAS22cxi   | 2022ane  | 10:54:42.336 | -00:37:53.42 | 0.052 |  Ia  |  +8   | (5) 

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) The SN redshift is consistent with the redshift of ESO 448- G 008 at z= 0.023590 (138 Mpc). The SN is 60 arcseconds from the host nucleus, which corresponds to a physical distance of ~40 kpc. Another possibility is that the SN host galaxy is fainter than the detection limit of Pan-STARRS images, corresponding to M > -14.3 mag at z ~ 0.03. (2) We measure a Si II 6355 velocity of -10,300 km/s. (3) We measure a Si II 6355 velocity of -12,500 km/s. (4) We measure a Si II 6355 velocity of -9,500 km/s. (5) We measure a Si II 6355 velocity of -10,000 km/s.