Spectroscopic Classification of Astrophysical Transients with the Lick Shane telescope
ATel #16754; K. W. Davis, R. J. Foley (UCSC), N. LeBaron (UCB)
on 6 Aug 2024; 17:30 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ryan Foley ([email protected])
Subjects: Optical, Supernovae
We report the classifications of astrophysical transients from spectroscopic observations with the Kast spectrograph on the Shane telescope obtained on 2024 July 07 UT. The targets were supplied by ASAS-SN 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
ZTF24aamlzwg | AT2024igk | 03:43:09.758 | +02:03:54.40 | 0.033 | II | +80d | (1)
ASASSN-24ei | AT2024nnu | 05:40:42.520 | -23:38:55.72 | 0.017 | Ia | +8d | (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 subtract an S0 galaxy template spectrum (Kinney et al., 1996, ApJ, 467, 38) and recover a broad H-alpha P-Cyngi feature. The flux below ~6000 A is consistent with solely host galaxy emission.
(2) We measure a Si II 6355 absorption velocity of -19,200 km/s.
