Spectroscopic Classifications of Optical Transients with the Lick Shane telescope

ATel #15064; K. Taggart, R. J. Foley (UCSC)
on 25 Nov 2021; 19:06 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ryan Foley (foley@ucsc.edu)

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We report the following classifications of optical transients from spectroscopic observations with the Kast spectrograph on the Shane telescope. The targets were supplied by the Pan-STARRS Survey for Transients, The Young Supernova Experiment, and ZTF. All observations were made on 2021 Nov 25 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name         | IAU Name | RA (J2000)   | Dec (J2000)  |  z     | Type | Phase |  Notes 
PS21mjy      | 2021aepp | 04:25:40.385 | -07:49:31.94 | 0.0311 | II   | peak  | (1) 
PS21mne      | 2021aeuw | 21:25:00.921 | +12:26:31.13 | 0.0296 | Ib/c | peak  | (2) 
ZTF20absugep | 2021aezx | 00:08:47.558 | -08:59:05.08 | 0.0266 | IIb  | -7    | (3) 
PS21msh      | 2021afeb | 01:00:16.438 | -15:17:53.95 | 0.0553 | Ia   | -5    | (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 H-alpha absorption velocity of -7,900 km/s. (2) The spectrum appears to be heavily reddened. Additional observations would be useful to further classify. (3) We measure a H-alpha absorption velocity of -15,700 km/s. (4) We measure a Si II 6355 velocity of -12,000 km/s.