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MDM Spectroscopic Classifications of PSST Transients

ATel #9041; R. Chornock (Ohio University), P. Blanchard, M. Nicholl, E. Berger (CfA)
on 11 May 2016; 19:56 UT
Credential Certification: Ryan Chornock (chornock@ohio.edu)

Subjects: Optical, Supernovae, Transient

We obtained optical spectra (range 4000-9000 Angstroms) of three transients with faint or undetected host galaxies reported by the Pan-STARRS Survey for Transients (PSST; Huber et al., ATel #7153). Observations were carried out 2016 May 8-9 UT using the 2.4 m Hiltner Telescope and OSMOS at MDM Observatory. Classifications were performed using the SuperNova IDentification code (SNID; Blondin & Tonry 2007, ApJ, 666, 1024) with the BSNIP templates of Silverman et al. (2012, MNRAS, 425, 1789) and are reported below:

 
Name    | RA (J2000)  | Dec (J2000) | Disc. Date | Disc. Mag | Filter |  Type  |  z    |  Notes 
PS16ceg | 18 23 17.70 | +27 13 37.1 |  20160428  |   18.6    |   r    | SN Ia  | 0.07  |  (1) 
PS16cfh | 17 10 43.92 | +53 35 59.6 |  20160430  |   19.2    |   r    | SN IIb | 0.05  |  (2) 
PS16cfl | 19 23 11.63 | +67 48 23.9 |  20160430  |   18.5    |   r    | SN Ia  | 0.08  |  (3) 

(1) The age is near maximum light and the best-fit SNID template is SN 1989B at an age of -0.5 d.
(2) The best-fit comparison is SN 1993J at an age of +20 days after (second) maximum light at a redshift of 0.047.
(3) Approximate age is +9 days after maximum light. The best match found by SNID is SN 1995D at an age of +10 days.