AstroNote 2020-261

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2020-12-17 17:24:53
Type: Object/s-Discovery/Classification
adH0cc spectroscopic classification of SN 2020acod
Authors: G. Csoernyei, C. Vogl, A. Floers, S. Taubenberger, M. G. Cudmani, A. Holas, W. Hillebrandt, S. H. Suyu (MPA Garching), B. Leibundgut, J. Spyromilio (ESO), S. J. Smartt, M. Dobson (QUB), R. Kotak (Turku), R. Bruch, A. Gal-Yam (Weizmann), C. Lemon (Lausanne)
Source Group: adH0cc
We have obtained an optical spectrum of SN 2020acod, which shows it to be a normal Type Ia supernova 6 to 8 days before maximum brightness.

The adH0cc programme for an "accurate determination of H0 with core-collapse supernovae" reports the classification of the optical transient SN 2020acod. The target was supplied by the Zwicky Transient Facility ZTF (Kulkarni 2018, 2018ATel11266....1K). The observations were performed  on the night of 2020 December 16 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.

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftSourcePhaseRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2020acod [ZTF20acxiyyp]07:33:56.266+16:36:26.12SN Ia0.152SDSS J073356.30+163626.10.152ZTF-7dThe spectrum is similar to those of normal Type Ia supernovae about a week before B-band maximum. GELATO (Harutyunyan et al., 2008) found good matches with the spectra of SN2003kf at the epochs of -6 to -8 days. The redshift was determined based on the wavelengths of narrow emission lines of the host galaxy contaminating the object spectrum. Based on the redshift, the measured Si II line velocity is approximately 14600 km/s.07:33:56.272+16:36:26.24SN Ia0.152