DRAFT
2022-07-16 15:38:58
Type: Object/s-Discovery/Classification
Bibcode: 2022TNSAN.145....1E
Discovery of Possible Transient in JWST NIRCam Images of SDSS J141930.11+525159.3
Authors: Mike Engesser (STScI), Gabriel Brammer (University of Copenhagen), Katriona Gould (University of Copenhagen), Justin Pierel (STScI), Sebastian Gomez (STScI), Sophie von Coelln (JHU), Ori Fox (STScI), Armin Rest (STScI), Lou Strolger (STScI), Anika Goel (University of Kansas/STScI), Suvi Gezari (STScI), Rodrigo Angulo (JHU), Kyle Dalrymple (JHU), Annie Gao (JHU), Muryel Guolo (JHU), Ryan Ridden Harper (STScI, U. Canterbury), Bryan Hilbert (STScI), Bhavin Joshi (JHU), Melissa Shahbandeh (FSU), Qinan Wang (JHU), Yossef Zenati (JHU)
Keywords: Time-domain, Photometry, Transient, Supernova, Infra-Red
Abstract:
We report on the discovery of an infrared transient from NIRCam images taken by the James Webb Space Telescope on MJD 59752.362583, [Finkelstein et. al, ERS 1345]. We detect a new point source located at RA:14:19:30.01 DEC:+52:51:59.9 after comparing and subtracting archival Hubble Space Telescope ACS images taken in F814W on MJD 55858.193150 from the JWST NIRCam images, confirming the transient nature of the source. Based on a redshift of z = 0.284 (Willner et al. 2017, 756, 72), these measurements correspond to an absolute magnitude of about -16.0 in F200W and about -15.5 in F444W, suggesting the transient could be a supernova post-peak.

We report on the discovery of an infrared transient in the galaxy SDSS J141930.11+525159.3 from NIRCam images taken by the James Webb Space Telescope on MJD 59752.362583, [Finkelstein et. al, ERS 1345]. We detect a new point source located at RA:14:19:30.01 DEC:+52:51:59.9 after comparing and subtracting archival Hubble Space Telescope ACS images taken in F814W on MJD 55858.193150 from the JWST NIRCam images, confirming the transient nature of the source. We perform preliminary aperture photometry in 6 filters for a single epoch (MJD 59752.362583), giving F115W, F150W, F200W, F277W, F356W, and F444W magnitudes of 23.94 AB, 24.39 AB, 24.60 AB, 24.44 AB, 25.23 AB, and 24.82 AB, respectively. We additionally present photometry at a second epoch (MJD 59758.325694), giving F200W magnitudes of 24.72 AB and F444W magnitudes of 24.98 AB. Based on a spectroscopic redshift of z = 0.284 (Willner et al. 2017, 756, 72), these measurements correspond to an absolute magnitude of about -16.0 in F200W and about -15.5 in F444W, suggesting the transient could be a supernova post-peak.

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 2022owj 14:19:30.030 +52:52:00.00 SDSS J141930.11+525159.3 0.284 14:19:30.030 +52:51:60.00
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J141930.jpg Discovery Image

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