DRAFT
2021-01-19 18:11:12
Type: Object/s-Discovery/Classification
Bibcode: 2021TNSAN..22....1T
adH0cc spectroscopic classification of SN 2021amj
Source Group: adH0cc
Abstract:
We have obtained an optical spectrum of SN 2021amj, which shows it to be a young Type II supernova.
The adH0cc programme for an "accurate determination of H0 with core-collapse supernovae" reports the classification of the optical transient SN 2021amj. The target was supplied by the Zwicky Transient Facility ZTF (Kulkarni 2018, 2018ATel11266....1K). The observations were performed on the night of 2021 January 18 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 | Remarks | TNS RA | TNS DEC | TNS Obj-Type | TNS Redshift |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TNS | 2021amj [ZTF21aaejeub] | 10:37:36.619 | +26:44:45.92 | SN II | 0.076 | SDSS J103736.64+264444.8 | 0.076 | ZTF | 7d | The spectrum shows a blue continuum with weak P-Cygni lines of hydrogen and helium superimposed, characteristic of a young Type II supernova. From the spectroscopic appearance and the photometric constraints, we estimate a phase about 7d after explosion. The redshift has been determined from narrow host-galaxy emission lines. | 10:37:36.599 | +26:44:46.03 | SN II | 0.076 |
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