Spectroscopic Classifications of Optical Transients with the Lick Shane telescope

ATel #13476; M. R. Siebert, D. O. Jones, G. Dimitriadis, R. J. Foley (UCSC)
on 13 Feb 2020; 22:55 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Georgios Dimitriadis (gdimitri@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. Targets were supplied by YSE, ZTF and ATLAS. All observations were made on 2020 Feb 13 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name         | IAU Name   | RA (J2000)  | Dec (J2000)  |   z   | Type  | Phase  | Notes
 
PS20hq       | AT 2020aqm | 07:59:27.03 | +38:35:05.84 | 0.343 |  AGN  |        | (1) 
ZTF20aammhli | AT 2020cdj | 17:56:11.73 | +62:45:25.21 | 0.01  |  Ia   |  peak  | (2) 
ATLAS20fpl   | AT 2020cdm | 12:35:01.31 | -05:29:18.82 | 0.023 |  Ia   |  -5 d  | (3) 

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) AGN-like spectrum, with emission lines corresponding to z = 0.343. (2) Good fits with normal and SN 1991bg-like SNe Ia around peak magnitude, at a median redshift of ~0.015. Assuming z = 0.015, we measure an Si II 6355 velocity of -10,500 km/s. (3) We measure an Si II 6355 velocity of -12,200 km/s.