论文标题

JWST解决了恒星种群的早期发行科学计划I。:Nircam Flux校准

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

论文作者

Boyer, Martha L., Anderson, Jay, Gennaro, Mario, Geha, Marla, McQuinn, Kristen B. Wingfield, Tollerud, Erik, Correnti, Matteo, Newman, Max J. Brenner, Cohen, Roger E., Kallivayalil, Nitya, Beaton, Rachel, Cole, Andrew A., Dolphin, Andrew, Kalirai, Jason S., Sandstrom, Karin M., Savino, Alessandro, Skillman, Evan D., Weisz, Daniel R., Williams, Benjamin F.

论文摘要

我们使用已解决的恒星种群早期发行科学(ERS)程序中的球状群集数据来验证James Webb太空望远镜(JWST)上近红外摄像头(NIRCAM)的通量校准。我们发现八个短波长检测器之间存在显着的通量偏移,范围从1-23%(约0.01-0.2 mag)影响影响所有NIRCAM成像观测值。我们为ERS过滤器提供了改进的零件,并表明社区得出的替代零点也显着改善了校准。我们还发现,检测器偏移似乎是时间变量,至少为0.1 mag。

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 (JWST). We find a significant flux offset between the eight short wavelength detectors, ranging from 1-23% (about 0.01-0.2 mag) that affects all NIRCam imaging observations. We deliver improved zeropoints for the ERS filters and show that alternate zeropoints 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.

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