Spectroscopic classification of AT2022dfo and AT2022dwu with SOAR/Goodman
ATel #15263; K. W. Davis, R. J. Foley (UCSC), G. Dimitriadis (TCD)
on 4 Mar 2022; 23:55 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ryan Foley (foley@ucsc.edu)
Subjects: Optical, Supernovae
We report the classifications from spectroscopic observations of AT2022dfo and AT2022dwu with the the Goodman spectrograph on the Southern Astrophysical Research (SOAR) telescope, made on 2022 Mar 03 UT and 2022 Mar 04 UT, respectively. AT2022dfo was supplied by the Young Supernova Experiment and AT2022dwu was supplied by ZTF. Classifications were performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).
Name | IAU Name | RA (J2000) | Dec (J2000) | z | Type | Phase | Notes
PS22box | AT2022dfo | 11:49:07.309 | +21:32:32.25 | 0.11 | Ia | -2d | (1)
ZTF22aacgyip | AT2022dwu | 10:02:40.355 | +05:39:48.26 | 0.0792 | Ia | -4d | (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 measure a Si II 6355 velocity of -11,300 km/s.
(2) We measure a Si II 6355 velocity of -12,800 km/s.
