Spectroscopic Classification of AT2023umd with SOAR/Goodman
ATel #16298; K. W. Davis, R. J. Foley (UCSC), V. A. Villar (CfA)
on 18 Oct 2023; 20:00 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ryan Foley (foley@ucsc.edu)
Subjects: Optical, Supernovae
We report the following the classification of AT2023umd from spectroscopic observations with the Goodman spectrograph on the SOAR telescope using the AEON queue, made on 2023 Oct 17 UT. The target was supplied by the Young Supernova Experiment (YSE) and identified using the target management platform YSE-PZ (Coulter et al., 2023, PASP, 135, 4501). The classification was performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Name | IAU Name | RA (J2000) | Dec (J2000) | z | Type | Phase | Notes
PS23jep | AT2023umd | 22:32:15.805 | +00:26:48.14 | 0.095 | Ia |pre-peak| (1)
Notes:
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 measure a Si II 6355 absorption velocity of -11,400 km/s.
We thank the SOAR observatory staff for executing this observation.
