AstroNote 2020-190

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2020-10-09 21:47:46
Type: Object/s-Discovery/Classification
Spectroscopic classification of optical transient with SOAR
Authors: R. Cartier (CTIO), C. Corco (CTIO) and C. Briceno (CTIO)
We report the spectroscopic classification of 5 supernovae, of which SN 2020ocz and SN 2020ukx are a Type II and a Type Ia, respectively, in the local Universe (9.5 to 17 Mpc). Although these supernovae were classified after maximum brightness we encourage follow-up observations.

The target were supplied by the All Sky Automated Survey for SuperNovae ASAS-SN (see Shappee et al. 2014, ApJ, 788, 48 and, the ESA Gaia Photometric Science Alerts Team and DPAC (, the ATLAS survey, see Smith et al. (2020, PASP, arXiv:2003.09052) and the Zwicky Transient Facility ZTF (Kulkarni 2018, 2018ATel11266....1K). The observations were performed on the night of 2020 October 7 with the 4.1 m SOAR telescope, equipped with the Goodman High Throughput Spectrograph using the 400 lines/mm grating, and a slit width of 1.0 arc second, resulting in a spectral coverage from 380 nm to 775 nm with a resolution of 0.6 nm. Classifications were done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024).

SN 2020ocz is hosted by galaxy UGCA 103 (ESO 422-41) at a distance of 10.8-15 Mpc (NED), and SN 2020ukx is hosted by galaxy NGC 2784 at a distance of 9.5-17 Mpc (NED). Follow up observations of these nearby SNe are strongly encoraged.

We deeply acknowledge the work of AURA staff, and specially of the SOAR team, for making the telescope and the instruments back to science operatins in a safe mode, after several months of inactivity. Congratulations!

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2020ocz [Gaia20ddq]05:10:44.200-31:35:37.61SN II0.003205:10:44.200-31:35:37.61SN II0.0032
TNS2020ufe [ATLAS20bbxl]05:24:04.528-23:01:27.12SN Ia0.07505:24:04.525-23:01:27.13SN Ia0.075
TNS2020uyg [ATLAS20bcme]06:15:19.132-29:19:09.76SN Ia0.04506:15:19.120-29:19:09.34SN Ia0.045
TNS2020uvi [ZTF20acgrwej]08:30:17.843-02:00:51.13SN Ia0.0908:30:17.843-02:00:51.13SN Ia0.09
TNS2020ukx [ASASSN-20mr]09:12:20.556-24:10:19.450.0023NGC 27840.00230509:12:20.560-24:10:19.45SN Ia0.0023