UBVRI photometry. II - The Cousins VRI system, its temperature and absolute flux calibration, and relevance for two-dimensional photometry

Details UBVRI photometry. II - The Cousins VRI system, its temperature and absolute flux calibration, and relevance for two-dimensional photometry UBVRI photometry. II - The Cousins VRI system, its temperature and absolute flux calibration, and relevance for two-dimensional photometry

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pasp...91..589b&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 91, Oct.-Nov. 1979, p. 589-607.

Astronomy and Astrophysics

Astronomy

1060

Calibrating, Infrared Astronomy, Stellar Magnitude, Stellar Spectrophotometry, Stellar Temperature, Ubv Spectra, Visual Photometry, Charge Coupled Devices, Dwarf Stars, Early Stars, Interstellar Extinction, Line Spectra, Main Sequence Stars, Optical Filters, Photographic Plates, Photometers, Photomultiplier Tubes, Reference Stars, Standards

Scientific paper

The Cousins VRI system is proposed as an ideal system to adopt as the standard system for both Northern and Southern Hemisphere near-IR observations. Comparisons are made between (b-y), (G-R)6, (V-I)jJ, and (V-I)C color indices measured for a large sample of equatorial HR stars which illustrate the precision of the system and the excellent temperature sensitivity of the (V- I)C index. Transformations between the different systems including the Eggen-Kron system are derived, a temperature calibration of (b-y), (R-I)C, and (V-I)C is provided based on empirical temperature determinations, and an absolute flux calibration for UBVRI is derived.
Photometry using photographic plates, electronic area detectors, and digital spectra is also discussed, and details given of specific photometric detector systems.

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