DRAFT
2021-03-23 20:49:15
Type: Object/s-Discovery/Classification
Bibcode: 2021TNSAN.101....1V
adH0cc spectroscopic classification of SN 2021ggl
Source Group: adH0cc
Abstract:
We have obtained an optical spectrum of SN 2021ggl, which shows it to be a young Type Ia supernova.
The adH0cc programme for an "accurate determination of H0 with core-collapse supernovae" reports the classification of the optical transient SN 2021ggl. The target was supplied by the Pan-STARRS survey for Transients (Huber et al. 2015, 2015ATel.7153....1). The observations were performed on the night of 2021 March 22 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 | 2021ggl [PS21byg] | 14:34:39.162 | -08:02:25.93 | SN Ia | 0.195 | anonymous | Pan-STARRS | -8d | The spectrum is similar to those of normal Type Ia supernovae about a week before B-band maximum. GELATO (Harutyunyan et al., 2008) identifies SN 2003kf around day -8 as the best match for this supernova. The redshift was determined based on the wavelengths of narrow H-alpha and [NII] emission lines of the host galaxy. Based on the redshift, the measured Si II line velocity is approximately 12000 km/s. | 14:34:39.162 | -08:02:25.93 | SN Ia | 0.195 |
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