Spectroscopic Classifications of Optical Transients with SOAR

ATel #11463; Y.-C. Pan, G. Dimitriadis, R. J. Foley (UCSC), S. W. Jha (Rutgers), A. Rest (STScI), D. Scolnic (Chicago/KICP)
on 22 Mar 2018; 18:58 UT
Credential Certification: Yen-Chen Pan (ypan6@ucsc.edu)

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We report the following classifications of optical transients from spectroscopic observations with the Goodman spectrograph on the Southern Astrophysical Research (SOAR) telescope. Targets were supplied by the Pan-STARRS Survey for Transients, ASAS-SN and DECam (ATel #11344). All observations were made on 2018 Mar 22 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name        | IAU Name  | RA (J2000)  | Dec (J2000)  |   z   | Type | Phase |  Notes
 
ASASSN-18fe | AT2018adh | 07:28:27.53 | -37:25:13.04 | 0     |  CV  |       | 
AT2018ael   | AT2018ael | 13:16:05.00 | -14:03:29.10 | 0.138 |  Ia  | +16 d | (1) 
AT2018agn   | AT2018agn | 13:37:19.20 | -01:17:46.70 | 0.058 |  II  |       | (2) 
PS18mt      | AT2018aji | 13:33:44.40 | -04:39:20.00 | 0.151 |  Ia  |  -3 d | (3) 
PS18mv      | AT2018ajj | 13:47:35.70 | -05:20:31.60 | 0.113 |  Ia  |  -3 d | (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)-(4) Targets discovered in the Kepler K2 C17 field. (5) We measure a Si II 6355 velocity of -11,800 km/s