Spectroscopic Classification of Transients with SOAR/Goodman
ATel #16393; K. W. Davis, R. J. Foley (UCSC)
on 26 Dec 2023; 20:23 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ryan Foley (foley@ucsc.edu)
Subjects: Optical, Supernovae
We report the following classifications of transients from spectroscopic observations with the Goodman spectrograph on the SOAR telescope using the AEON queue, made on 2023 Dec 23 UT. The targets were supplied by YSE and ZTF, and identified using the target management platform YSE-PZ (Coulter et al., 2023, PASP, 135, 4501). The classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Name | IAU Name | RA (J2000) | Dec (J2000) | z | Type | Phase | Notes
PS23lea | AT2023yti | 02:06:22.215 | -18:19:06.07 | 0.09 | Ia | +5d |
PS23lmt | AT2023zaz | 03:58:55.422 | -26:03:26.79 | 0.0625 | IIn | peak | (1)
ZTF23abshiqq | AT2023zfq | 06:06:45.118 | -25:02:22.05 | 0.049 | II | post-peak | (2)
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 identify multiple narrow (FWHM < 1,000 km/s) lines of H and ionized He. We measure a H-beta P-Cygni absorption velocity of -700 km/s.
(2) The SN has developed spectral features since the spectrum provided in ATel#16379, and thus we update the classification and redshift. We measure a H-alpha FWHM of 9,300 km/s.
We thank the SOAR observatory staff for executing this observation.
