AstroNote 2021-134

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DRAFT
2021-04-21 13:39:23
Type: Object/s-Discovery/Classification
Classification of SN 2021jvp (PS21dhv) as a Type Ia-91bg-like supernova with UH88 / SNIFS
Authors: M. Huber (IfA, Hawaii), T.-W. Chen (Stockholm), M. Fulton, S. Srivastav, S. J. Smartt, K. W. Smith (Queen's University Belfast), K. C. Chambers (IfA, Hawaii), O. McBrien, J. Gillanders, D. R. Young, L. Shingles, M. McCollum (Queen's University Belfast), J. Anderson (ESO), L. Denneau, A. Heinze, J. Tonry, H. Weiland (IfA, University of Hawaii), B. Stalder (LSST), A. Rest (STScI), D. E. Wright (University of Minnesota)
Source Group: Pan-STARRS
Abstract:
Here we report the spectroscopic classification of SN 2021jvp (PS21dhv; Chen et al. AstroNote 2021-124) in galaxy WISEA J142047.66-194744.9. The spectrum shows a good match with SN 1991bg around peak. We notice that the projection distance of SN 2021jvp is 28.6 Kpc away from the host centre at a remote location, if WISEA J142047.66-194744.9 is the host. There are no other plausible hosts visible in the vicinity.

We classify SN 2021jvp (PS21dhv; Chen et al. AstroNote 2021-124) in galaxy WISEA J142047.66-194744.9 as a Type Ia-91bg-like supernova. 

Observations were performed on the UH88 on the night of 2021 April 19 on MJD = 59323.492 using SNIFS (Blandine et al. 2004SPIE.5249..146L) and Channel R (wavelengths from 520 nm to 1 µm with a resolution around 1300 at 760 nm). 

Classifications were done using SNID (Blondin & Tonry 2007; 2007ApJ...666.1024B). The spectrum shows a good match with SN1991bg (Ia-91bg) at phase +2d, and infers a redshift of 0.037 +/- 0.007 from the spectral fitting. This is slightly closer than the redshift of the host galaxy of 0.044 (from NED), but within the uncertainty of the SNID estimate. We notice that the projection distance of SN 2021jvp is 28.6 Kpc away from the host centre at a remote location, if WISEA J142047.66-194744.9 is the host. There are no other plausible hosts visible in the vicinity.

The classification spectra and additional details can be obtained from the IAU Transient Name Server.

The classified object is listed in the Related Objects table below.

 

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftSourcePhaseRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2021jvp [PS21dhv]14:20:46.941-19:47:10.05SN Ia-91bg-like0.044WISEA J142047.66-194744.90.044Pan-STARRS1at maxRedshift from known host.14:20:46.938-19:47:10.09SN Ia-91bg-like0.044