eCite Digital Repository
The JWST resolved stellar populations early release science program I.: NIRCam Flux Calibration
Citation
Boyer, ML and Anderson, J and Gennaro, M and Geha, M and Wingfield McQuinn, KB and Tollerud, E and Correnti, M and Brenner Newman, MJ and Cohen, RE and Kallivayalil, N and Beaton, R and Cole, AA and Dolphin, A and Kalirai, JS and Sandstrom, KM and Savino, A and Skillman, ED and Weisz, DR and Williams, BF, The JWST resolved stellar populations early release science program I.: NIRCam Flux Calibration, American Astronomical Society. Bulletin, 6 pp. 1-5. ISSN 2330-9458 (2022) [Non Refereed Article]
 | PDF Pending copyright assessment - Request a copy 684Kb |
DOI: doi:10.3847/2515-5172/ac923a
Abstract
We use globular cluster data from the Resolved Stellar Populations Early Release Science (ERS) program to validate the flux calibration for the Near Infrared Camera (NIRCam) on the James Webb Space Telescope. We find a significant flux offset between the eight short wavelength detectors, ranging from 1% to 23% (~0.01-0.2 mag) that affects all NIRCam imaging observations. We deliver improved zero-points for the ERS filters and show that alternate zero-points derived by the community also improve the calibration significantly. We also find that the detector offsets appear to be time variable by up to at least 0.1 mag.
Item Details
| Item Type: | Non Refereed Article |
|---|---|
| Keywords: | space telescopes, photometry, infrared |
| Research Division: | Physical Sciences |
| Research Group: | Astronomical sciences |
| Research Field: | Astronomical instrumentation |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding knowledge |
| Objective Field: | Expanding knowledge in the physical sciences |
| UTAS Author: | Cole, AA (Professor Andrew Cole) |
| ID Code: | 153493 |
| Year Published: | 2022 |
| Deposited By: | Physics |
| Deposited On: | 2022-09-20 |
| Last Modified: | 2022-09-27 |
| Downloads: | 0 |
Repository Staff Only: item control page