Spectroscopic Classifications of Optical Transients with SOAR

ATel #8434; R. J. Foley, R. Hounsell, J. A. Miller, Y.-C. Pan (Illinois), A. Rest (STScI), S. W. Jha (Rutgers), D. Scolnic (Chicago/KICP), K. W. Smith, D. Wright, S. J. Smartt (QUB), M. Huber, K. C. Chambers, H. Flewelling, M. Willman, N. Primak, A. Schultz, B. Gibson, E. Magnier, C. Waters, J. Tonry, R. J. Wainscoat (IfA, Hawaii)
on 18 Dec 2015; 13:08 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ryan Foley (rfoley@illinois.edu)

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We report the following classifications of optical transients from spectroscopic observations with the Goodman spectrograph (wavelength range 3300 - 7100 A) on the SOAR telescope. Targets were supplied by the Pan-STARRS Survey for Transients (PSST), All Sky Automated Survey for SuperNovae (ASAS-SN), and MASTER. All observations were made on 2015 Dec 18 UT. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

 
Name                 | RA (J2000)  | Dec (J2000) |  z    | Type | Phase |  Notes
 
ASASSN-15tu          | 22:34:02.58 | -32:23:53.6 | 0.013 | IIb  | +0    | (1) 
PS15cwv              | 02:59:54.32 | +05:44:06.7 | 0.045 | Ia   | +15   | 
PS15dng              | 10:11:51.12 | -07:37:03.8 | 0.053 | Ia   | +30   | 
PS15dnf              | 09:57:34.90 | -02:09:42.1 | 0.083 |      |       | (2) 
PS15dmf              | 02:55:06.51 | +18:13:29.1 | 0.122 | Ia   | +7    | (3) 
PSNJ14102342-4318437 | 14:10:23.42 | -43:18:43.7 | 0.006 | Ib   | +10   | 
 

Notes: (1) We measure an H-alpha velocity of -11,700 km/s.

(2) Blue "featureless," but somewhat noisy spectrum.

(3) We measure a Si II 6355 velocity of -10,400 km/s.

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.