Accession Number : AD0604561

Title :   A NOTE ON INFRARED STELLAR MAGNITUDES,

Corporate Author : RAND CORP SANTA MONICA CALIF

Personal Author(s) : Larmore,Lewis

Report Date : 13 OCT 1954

Pagination or Media Count : 10

Abstract : The luminous efficiencies of the eye and a lead sulphide detector have been computed for black-body radiation over the range of temperatures from 300K to 25,000K. The ratio of these efficiencies is used to compute the infrared color index of stars from type M to type B of the spectral series; the infrared color index is here defined as the visual magnitude minus infrared magnitude, with the difference adjusted to give zero for type AO stars. The computed values of the infrared color indices are compared with those measured by Fellgett, and surprisingly good agreement is obtained. The greatest discrepancy is found for B-type stars. The discrepancies are discussed for particular stars. (Author)

Descriptors :   (*INFRARED SPECTROSCOPY, STARS), (*STARS, INFRARED SPECTROSCOPY), LEAD COMPOUNDS, SULFIDES, DETECTORS, BLACKBODY RADIATION, COLORS, ASTROPHYSICS, VISUAL PERCEPTION, CORRELATION TECHNIQUES

Distribution Statement : APPROVED FOR PUBLIC RELEASE