2022RNAAS...6..191B

Query : 2022RNAAS...6..191B

2022RNAAS...6..191B - Research Notes of the AAS, 6, 191 (2022/September-0)

The JWST Resolved Stellar Populations Early Release Science Program. I. NIRCam Flux Calibration.

BOYER M.L., ANDERSON J., GENNARO M., GEHA M., McQUINN K.B.W., TOLLERUD E., CORRENTI M., NEWMAN M.J.B., COHEN R.E., KALLIVAYALIL N., BEATON R., COLE A.A., DOLPHIN A., KALIRAI J.S., SANDSTROM K.M., SAVINO A., SKILLMAN E.D., WEISZ D.R. and WILLIAMS B.F.

Abstract (from CDS):

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.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Flux calibration - James Webb Space Telescope - Globular star clusters

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
2 GSPC P177-D * 15 59 13.5786527568 +47 36 41.906773080   14.17 13.52 13.42   G0 54 0
3 GSC 02581-02323 * 16 31 33.8123836584 +30 08 46.397382324 13.576 12.972 12.917 12.564 12.212 G2V 106 0
4 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0

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