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

ATel #11622; G. Dimitriadis, R. J. Foley (UCSC)
on 9 May 2018; 00:38 UT
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 3-m telescope. Targets were supplied by ATLAS, ASAS-SN, and the KEGS K2 SN search. All observations were obtained on 2018 May 08 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name         | IAU Name   | RA (J2000)  | Dec (J2000)  |   z   | Type |  Phase  |  Notes
 
ATLAS18nut   | AT2018bfd  | 14:29:00.52 | +17:19:30.63 | 0.052 |  Ia  |   +2d   |  (1) 
ASASSN-18jn  | AT2018bfh  | 10:22:41.19 | +15:56:20.11 | 0.044 |  Ia  |   +5d   |  (2) 
ASASSN-18jp  | AT2018bfr  | 11:04:47.50 | -15:37:59.20 | 0.072 |  Ia  |   -1d   |  (3) 
C17-0118     | AT2018bft  | 13:53:19.15 | -04:51:31.87 | 0.075 |  Ia  |   -3d   |  (4,5) 

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) We measure an Si II 6355 velocity of -11,300 km/s. (2) We measure an Si II 6355 velocity of -9,800 km/s. (2) We measure an Si II 6355 velocity of -10,800 km/s. (4) We measure an Si II 6355 velocity of -12,700 km/s. (5) This is in a K2 Campaign 17 galaxy and should be observed by K2.