Spectroscopic classification of ASASSN-17rl as type Ib/c

ATel #11163; S. Bose, P. Chen, Subo Dong (KIAA-PKU), David Bersier (LJMU), J. L. Prieto (UDP)
on 13 Jan 2018; 11:32 UT
Credential Certification: Subhash Bose (bose@pku.edu.cn)

Subjects: Optical, Supernovae

We report optical spectroscopic observations of supernova candidate ASASSN-17rl / 2017jea (ATel #11103) done on UT 2017-12-28.47 with DBSP mounted on the Hale 5m telescope at Palomar Observatory and on 2018-01-11.92 with SPRAT mounted on the 2m Liverpool Telescope. The target was discovered by All-Sky Automated Survey for Supernovae (ASAS-SN, Shappee et al. 2014). We used SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) to identify the type and phase of the SN spectra.

The Halpha emission line from the host galaxy is found at a redshift of z=0.045. Both of the spectra broadly matches with SNe Ib/c, and the phase of the later spectrum (2018-01-12) is found to be near the peak.

This research uses data obtained through the Telescope Access Program (TAP), which has been funded by the National Astronomical Observatories of China, the Chinese Academy of Sciences, and the Special Fund for Astronomy from the Ministry of Finance. Observations obtained with the Hale Telescope at Palomar Observatory were obtained as part of an agreement between the National Astronomical Observatories, Chinese Academy of Sciences, and the California Institute of Technology.