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.