Creation of photometric star catalogs using UBV data and model stellar atmospheres

Details Creation of photometric star catalogs using UBV data and model stellar atmospheres Creation of photometric star catalogs using UBV data and model stellar atmospheres

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jansc..31..473h&link_type=abstract

Journal of the Astronautical Sciences (ISSN 0021-9142), vol. 31, Oct.-Dec. 1983, p. 473-506. Research supported by Lockheed Inde

Astronomy and Astrophysics

Astronomy

3

Astronomical Catalogs, Stellar Atmospheres, Stellar Models, Stellar Spectrophotometry, Ubv Spectra, Interstellar Extinction, Solar Spectra, Stellar Magnitude, Stellar Spectra

Scientific paper

The creation of star catalogs for any sensor system is accomplished with the use of observations in the UBV system in conjunction with the theoretical predictions of stellar fluxes derived from models of stellar atmospheres. A comparison of data on eight of the principal photometric systems currently in use shows that the Johnson UBV system and its extension clearly provides the most extensive data base, though the uvby system is better suited for estimating the stellar parameters of temperature, gravity, and abundance. The absolute calibration of the UBV system is discussed in detail. It is shown that for distant (reddened) stars, the spectral energy distribution function is affected by wavelength-dependent scattering and absorption. New updated tables for effective temperature, gravity, and (B - V) color are presented for all normal MK-type stars. Also, tables and prescriptions are given for identifying many special and peculiar types of stars by equivalent MK-types.

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