Abstract
A linear relation is found to exist between the Barnes-Evans visual surface brightness parameterF V and the (b-y)0 colour index ofuvbyβ photometry for spectral types later than G0. Using this relation, and a previously determined relation for spectral types B0-G0, tables of intrinsic colours and indices, absolute magnitude and stellar radius are given for the ZAMS and luminosity classes Ia-V over a wide range of spectral types. Comparison of absolute magnitudes and radii calculated fromuvbyβ photometry with values obtained using the visual magnitude, parallax and angular diameter indicates thatuvbyβ photometry can be used to determineM V to ±0m.2 and log(R/R ⊙) to ±0.05.
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Moon, T. Stellar luminosities and radii fromuvbyβ photometry. Astrophys Space Sci 117, 261–270 (1985). https://doi.org/10.1007/BF00650151
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DOI: https://doi.org/10.1007/BF00650151