AstroNote 2022-169

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DRAFT
2022-08-17 03:10:38
Type: Object/s-Discovery/Classification
Strongly Lensed SN in MACS 2129 Galaxy-Cluster Field
Authors: Patrick Kelly (UMN), Adi Zitrin (Ben Gurion), Masamune Oguri (Chiba), Jose Diego (Cantabria), Hayley Williams (UMN), Tom Broadhurst (Basque Country), Wenlei Chen (UMN), Anton Koekemoer (STScI), Justin Pierel (STScI), Lou Strolger (STScI), Tommaso Treu (UCLA)

We report the discovery of a supernova in the MACS2129 galaxy-cluster field in a multiply imaged galaxy at a redshift of z=1.52.  A transient was detected in WFC3 IR F110W imaging acquired as part of the SNAP GO-16729 program (PI: Kelly) on August 7, 2022 UT. Lens models show that the image we have detected is the trailing or last-arriving image. The Oguri et al. GLAFIC model finds that the SN’s magnification is ~4, the Zitrin et al. Light-Traces-Mass model yields magnification of 3, and a Zitrin et al. simply parameterized model predicts a magnification of 6. We measure a F110W magnitude of 24.75+-0.15 AB, and do not detect the source in the F606W imaging. The most recent HST visit to the field, by GO-16729, was on June 4 2022 UT, and the SN was not detected in the F110W imaging with a three-sigma upper limit of 25.7 mag AB. Non-disruptive follow up with HST GO-16264 (PI: Pierel) has been triggered to obtain follow-up near-infrared imaging of the supernova. The SN may become detectable from the ground.

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2022riv21:29:40.212+00:05:24.181.521.5221:29:40.212+00:05:24.18