ABSOLUTE FLUX CALIBRATION OF THE IRAC INSTRUMENT ON THE SPITZER SPACE TELESCOPE USING HUBBLE SPACE TELESCOPE FLUX STANDARDS

被引：31

作者：

Bohlin, R. C. ^{[1
]}

Gordon, K. D. ^{[1
]}

Rieke, G. H. ^{[2
]}

Ardila, D. ^{[3
]}

Carey, S. ^{[4
]}

Deustua, S. ^{[1
]}

Engelbracht, C. ^{[2
]}

Ferguson, H. C. ^{[1
]}

Flanagan, K. ^{[1
]}

Kalirai, J. ^{[1
]}

Meixner, M. ^{[1
]}

Noriega-Crespo, A. ^{[4
]}

Su, K. Y. L. ^{[2
]}

Tremblay, P. -E. ^{[5
]}

机构：

[1] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[2] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[3] NASA, CALTECH, Herschel Sci Ctr, Pasadena, CA 91125 USA

[4] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA

[5] Univ Montreal, Montreal, PQ H3C 3J7, Canada

来源：

ASTRONOMICAL JOURNAL | 2011年 / 141卷 / 05期

关键词：

stars: atmospheres; stars: fundamental parameters; techniques: spectroscopic; SPECTRAL IRRADIANCE CALIBRATION; MULTIBAND IMAGING PHOTOMETER; INFRARED ARRAY CAMERA; MODEL ATMOSPHERES; SPECTROSCOPIC ANALYSIS; FAR-ULTRAVIOLET; WHITE-DWARFS; STARS; LINE; SPECTROPHOTOMETRY;

D O I：

10.1088/0004-6256/141/5/173

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The absolute flux calibration of the James Webb Space Telescope (JWST) will be based on a set of stars observed by the Hubble and Spitzer Space Telescopes. In order to cross-calibrate the two facilities, several A, G, and white dwarf stars are observed with both Spitzer and Hubble and are the prototypes for a set of JWST calibration standards. The flux calibration constants for the four Spitzer IRAC bands 1-4 are derived from these stars and are 2.3%, 1.9%, 2.0%, and 0.5% lower than the official cold-mission IRAC calibration of Reach et al., i.e., in agreement within their estimated errors of similar to 2%. The causes of these differences lie primarily in the IRAC data reduction and secondarily in the spectral energy distributions of our standard stars. The independent IRAC 8 mu m band-4 fluxes of Rieke et al. are about 1.5% +/- 2% higher than those of Reach et al. and are also in agreement with our 8 mu m result.

引用

页数：12

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