SOAR telescope classification of optical transients
ATel #14738; Regis Cartier (CTIO/NOIRLab), Jacqueline Seron (CTIO/NOIRLab) and Carlos Corco (SOAR/NOIRLab)
on 24 Jun 2021; 17:15 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Regis Cartier (rgcartier@gmail.com)
Subjects: Optical, Supernovae, Transient, Tidal Disruption Event
We report the spectroscopic classification of the following transients discovered by Zwicky Transient Facility (https://www.ztf.caltech.edu/; Kulkarni et al. 2018, ATel #11266), the All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014, ApJ, 788, 48 and http://www.astronomy.ohio-state.edu/~assassin/index.shtml ), and by the ATLAS survey, see Smith et al. (2020, PASP, arXiv:2003.09052). The observations were performed with the Goodman spectrograph mounted on the SOAR telescope at Cerro Pachon on the night of June 21, 2021. We used SNID (Blondin and Tonry, 2007, ApJ, 666, 1024) cross-correlation software to classify the SN candidates spectra.
Survey name | IAU name | RA (J2000) | Dec (J(2000) | Source | z | Type | Phase | Notes
ASASSN-21ik | AT2021mrk | 18:40:09.4 | -68:58:58.1 | ASAS-SN | 0.047 | TDE? | | (1,2)
ZTF21abhthvj | SN2021qta | 21:32:12.4 | -10:24:38.1 | ZTF | 0.0689 | Ia | -7 to -4 d | (3,4)
ZTF21abhttll | SN2021qsw | 22:07:05.6 | +12:18:55.6 | ZTF | 0.079 | Ia | at max | (1)
ASASSN-21lh | SN2021qhy | 00:31:44.9 | -32:12:37.0 | ASAS-SN | 0.024 | Ia | at max | (1)
ATLAS21wzx | SN2021qip | 01:56:43.7 | +15:01:02.5 | ATLAS | 0.0155 | Ib | +4 to +7 d | (3)
ASASSN-21li | SN2021qqu | 03:37:51.9 | -14:58:33.8 | ASAS-SN | 0.002 | II | young | (5)
(1) Host galaxy redshift from NED.
(2) Broad spectral features mostly consistent with a TDE with significant host galaxy contamination and extinction.
(3) Redshift measured from host galaxy narrow emission lines.
(4) The spectrum was obtained under poor seeing and is significantly contaminated by host galaxy emission.
(5) Redshift obtained using SNID. Follow-up observations are encouraged.
