Spectroscopic Classification of AT 2017eji with Keck I
ATel #10443; R. J. Foley, C. D. Kilpatrick (UCSC)
on 30 May 2017; 15:26 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ryan Foley (firstname.lastname@example.org)
Subjects: Optical, Supernovae
We report the classification of AT 2017eji from a spectroscopic observation made on 2017 May 30 UT with the Low Resolution Imaging Spectrometer (LRIS) on the Keck I telescope. The target was supplied by ISSP. The classification was performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
IAU Name | RA (J2000) | Dec (J2000) | z | Type | Phase | Notes
AT2017eji | 20:57:53.38 | -17:57:09.0 | 0.028 | Ia | +1 d | (1)
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) We detect C II 6580 absorption, which is somewhat unusual for a SN Ia after peak brightness. We measure Si II 6355 and C II 6580 velocities of -10,600 km/s and -10,600 km/s, respectively.