DRAFT
2022-08-12 20:23:43
Type: Object/s-Discovery/Classification
Bibcode: 2022TNSAN.165....1H
Pan-STARRS photometry of the rapidly fading AT2022qzr
Authors: M. E. Huber, K. C. Chambers, A. S. B. Schultz, M. Fulton, S. Srivastav, S. J. Smartt, K. W. Smith, D. R. Young, J. Gillanders, T. Moore (QUB), T. de Boer, J. Bulger, J. Fairlamb, H. Gao, C. C. Lin, T. Lowe, E. Magnier, R. J. Wainscoat (IfA, Univ. Hawaii), T.-W. Chen (Stockholm), M. Nicholl (Birmingham), A. Rest (STScI), C. Stubbs (Harvard)
Source Group: Pan-STARRS
Keywords: Supernova, Transient
Abstract:
We report Pan-STARRS1 photometry of the rapidly fading AT2022qzr reported by Srivastav et al. (AstroNote 2022-164). The r and i band photometry suggests the rapid fading has flattened out and this would make a shock cooling signature of a type IIb supernova the most likely explanation. Further observations are necessary to confirm but the target will get closer to the Moon over the next few days.

We osberved the rapidly fading AT2022qzr reported by Srivastav et al. (AstroNote 2022-164) with the 1.8m Pan-STARRS1 telescope (Chambers et al. 2016, arXiv:1612.05560) approximately 1.1 days after the last ATLAS photometry reported by Srivastav et al. (AstroNote 2022-164). The target was 33 degrees from the (near) full Moon, and although the camera suffered scattered light glints, we measure : 

g 59803.614597 19.06  0.16 
r  59803.616222 18.54  0.10 
i 59803.617793  18.59  0.17
z 59803.619369 18.74  0.27

A simple synthetic ATLAS o-band estimate at this epoch (o =~ 18.6 +/- 0.2)  suggests the lightcurve has flattened compared to the last ATLAS significant detection on 59802.2 (o = 18.51). This most likely implies the rapid fade is a related to a shock cooling phase in a supernova, such as a IIb. 

Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2022qzr [ATLAS22zpf] 00:09:55.009 -05:01:16.07 00:09:55.001 -05:01:16.09 SN IIb 0.019
AstroNote Publication Timestamp Title Authors
2019-48 2019-07-20 17:37:13 Pan-STARRS Search for Kilonovae : discovery of an intrinsically faint transient in UGC 12798 (68 Mpc) S. J. Smartt, (Queen's University Belfast), K. C. Chambers, (IfA, University of Hawaii) K. W. Smith (QUB), M. Huber (IfA), S. Srivastav, O. McBrien, D. R. Young, J. Gillanders, D. O'Neil, P. Clark, S. Sim, (QUB), T. de Boer, J. Bulger, J. Fairlamb, C.-C. Lin, T. Lowe, E. Magnier, A. Schultz, R. J. Wainscoat, M. Willman (IfA), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), C. Stubbs (Harvard), A. Rest (STScI)

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