Spectroscopic Classifications of Optical Transients with SOAR/Goodman

ATel #10525; Spectroscopic Classifications of Optical Transients with SOAR/Goodman
on 23 Jun 2017; 23:57 UT
Credential Certification: Charles Kilpatrick (cdkilpat@ucsc.edu)

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We report the following classifications of optical transients from spectroscopic observations with the Goodman spectrograph on the SOAR 4-m telescope. Targets were supplied by the All-Sky Automated Survey for Supernovae (ASAS-SN), the ATLAS project (ATel #8680), and Gaia. Observations were made on 2017 June 21 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name       | IAU Name  | RA (J2000)  | Dec (J2000)  | z     | Type   | Phase | Notes
 
ATLAS17gvn | AT2017epb | 14:18:27.70 | +12:53:04.78 | 0.025 | Ia     | -1d   | (1) 
ASASSN-17hp| AT2017esb | 13:09:36.02 | -18:58:19.56 | 0.035 | Ia     | +8d   | (2) 
Gaia17bod  | AT2017eul | 01:44:30.88 | +04:40:05.66 | 0.026 | II     |       | (3) 
ATLAS17hdh | AT2017euz | 19:41:12.29 | -23:30:01.17 | 0.050 | Ia     | -2d   | (4) 
ATLAS17hdo | AT2017evc | 21:17:50.88 | -25:06:23.97 | 0.049 | Ia-91T | -3d   | (5) 
Gaia17bow  | AT2017evr | 23:45:07.27 | +09:03:37.66 | 0.041 | Ia     | +10d  | 

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 Si II 6355 velocity of -11,300 km/s.
(2) We measure a Si II 6355 velocity of -11,200 km/s.
(3) We measure an H-alpha velocity of -7500 km/s.
(4) Several matches similar to SN 1991T-like objects. We measure a Si II 6355 velocity of -10,200 km/s.
(5) We measure a Si II 6355 velocity of -10,200 km/s.