DRAFT
2020-09-02 18:06:13
Type: Object/s-Discovery/Classification
Bibcode: 2020TNSAN.171....1T
HOLISMOKES spectroscopic classification of SN 2020sjp
Authors: S. Taubenberger, S. H. Suyu, S. Schuldt, R. Cañameras, J. Bayer, S. Huber, U. Nöbauer, C. Vogl, A. Yıldırım (MPA/TUM Garching), D. Sluse (STAR Institute Liège), J. H. H. Chan, F. Courbin (EPFL Lausanne), M. Kromer (HITS Heidelberg), S. Sim (QUB Belfast)
Source Group: HOLISMOKES
Keywords: Transient, Supernova, Spectroscopy, Optical
Abstract:
We have obtained an optical spectrum of SN 2020sjp, which shows it to be a Type Ia supernova a few days after maximum light.

The HOLISMOKES team (Highly Optimised Lensing Investigations of Supernovae, Microlensing Objects, and Kinematics of Ellipticals and Spirals; Suyu et al. 2020, 2020arXiv200208378S) reports the classification of the optical transient SN 2020sjp. The target was supplied by the Zwicky Transient Facility ZTF (Kulkarni 2018, 2018ATel11266....1K). The observations were performed on UT 2020 August 27 with the Gemini-N Telescope, equipped with GMOS-N and the B600 grating, covering a wavelength range from 4750 to 8715 Å at a resolution of 4.5 Å. 

Show current TNS values
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 2020sjp [ZTF20abvxhvg] 23:38:45.026 -13:21:29.90 SN Ia 0.206 WISEA J233844.99-132131.8 0.206 ZTF +5d The spectrum resembles those of Type Ia supernovae a few days after B-band maximum. SNID (Blondin & Tonry 2007, ApJ, 666, 1024) provides good matches with several normal and 91T-like Type Ia supernovae between peak and +1 week. The reported redshift has been determined from cross-correlating our spectrum of the host galaxy with spectral templates of early-type galaxies from SDSS. 23:38:45.026 -13:21:29.90 SN Ia 0.206
File Comments
SN2020sjp_20200827_GMOS-N.dat Quick-reduction spectrum with approximate flux calibration.

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