Spectroscopic Classifications of Optical Transients with the Lick Shane telescope

ATel #14748; C. Rojas-Bravo, K. Taggart, R. J. Foley (UCSC)
on 2 Jul 2021; 20:35 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 telescope. The targets were supplied by AMPEL and ALeRCE (selected from the ZTF data stream). All observations were made on 2021 Jul 2 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name        | IAU Name  | RA (J2000)   | Dec (J2000)  |   z    | Type | Phase    | Notes 
ZTF21abioeyq| AT2021rhk | 14:03:02.405 | +08:45:56.46 | 0.0225 |  II  | pre-peak | (1) 
ZTF21abfoace| AT2021pnp | 16:16:26.622 | +36:44:26.25 | 0.03   |  IIb |  +4      | (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 detect a blue continuum and weak H-alpha emission. (2) There is weak, possible galactic H-alpha emission in the spectrum; if correctly identified, it would correspond to z = 0.034, consistent with the SN redshift. Assuming this redshift, we measure an SN H-alpha velocity of -11,400 km/s.