DRAFT
2021-04-18 19:02:27
Type: Object/s-Discovery/Classification
Bibcode: 2021TNSAN.128....1V
adH0cc spectroscopic classification of SN 2021jom and SN 2021jwd
Source Group: adH0cc
Abstract:
We have obtained optical spectra of SN 2021jom and SN 2021jwd, which show them to be young Type II supernovae approximately a week after explosion.
The adH0cc programme for an "accurate determination of H0 with core-collapse supernovae" reports the classification of the optical transients SN 2021jom and SN 2021jwd. The targets were supplied by the Zwicky Transient Facility ZTF (Kulkarni 2018, 2018ATel11266....1K). The observations were performed on the night of 2021 April 17 with the ESO Very Large Telescope UT1, equipped with the FORS2 spectrograph and grism 300V, covering a wavelength range from 3400 to 9600 Å at a resolution of 10 Å.
Catalog | Name | Reported RA | Reported DEC | Reported Obj-Type | Reported Redshift | Host Name | Host Redshift | Source | Phase (days) | Remarks | TNS RA | TNS DEC | TNS Obj-Type | TNS Redshift |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TNS | 2021jom [ZTF21aavdukh] | 14:45:25.281 | +16:35:12.80 | SN II | 0.0372 | WISEA J144525.39+163510.4 | 0.037177 | ZTF | 6 | The spectrum is characterized by a blue continuum with P-Cygni features of H and He superimposed, indicative of a young Type II supernova. GELATO (Harutyunyan et al. 2008, 2008A&A...488..383H) finds a convincing match with SN 1999em at 6 days after the explosion. The estimated phase is consistent with the ZTF light curve. We adopted the redshift of the host as the supernova redshift. | 14:45:25.283 | +16:35:12.64 | SN II | 0.0372 |
TNS | 2021jwd [ZTF21aavrvuj] | 11:34:11.689 | +31:49:25.29 | SN II | 0.064 | KUG 1131+320 | 0.063974 | ZTF | 7 | The spectrum is characterized by a blue continuum with weak P-Cygni features of H and He superimposed, indicative of a young Type II supernova. The phase of the supernova was estimated based on the ZTF light curve. We adopted the redshift of the host as the supernova redshift. | 11:34:11.673 | +31:49:25.63 | SN II | 0.064 |
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