Spectroscopic Classifications of Optical Transients with the Lick Shane 3-m telescope

ATel #12110; G. Dimitriadis, T. Hung, R. J. Foley (UCSC)
on 13 Oct 2018; 23:21 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 ASASSN and ZTF. All observations were made on 2018 Oct 13 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name         | IAU Name  | RA (J2000)  | Dec (J2000)  |   z   | Type  | Phase  | Notes
 
ASASSN-18xm  | AT2018hfp | 20:59:47.84 | -16:38:12.66 | 0.029 |  Ia   |  -4 d  | (1) 
ASASSN-18xr  | AT2018hgc | 00:42:04.56 | -02:37:40.80 | 0.052 |  Ia   |  -5 d  | (2) 
ASASSN-18xs  | AT2018hgd | 00:22:05.35 | +07:03:50.33 | 0.025 |  SN   |  young | (3) 
ZTF18abnuhuy | AT2018fzo | 21:36:15.30 | +20:02:07.30 | 0.081 |  AGN  |   -    | 

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 -14,700 km/s. (2) We measure an Si II 6355 velocity of -11,500 km/s. (3) Blue spectrum with weak emission lines of H alpha, [N II] and [S II] at z=0.025 indicate a young SN.