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The temperatures, abundances and gravities of F dwarf stars.Theoretical colors computed from laboratory line data and from model stellar atmospheres have been used to interpret the colors of about 150 F and early G dwarfs. Effective temperatures have been derived from the H-beta index and from R-I, abundances have been obtained from m(sub 1) and from b-y, and gravities have been obtained from c(sub 1) and from b-y. The effective temperatures and gravities are in good agreement with values obtained from spectral scans. Absolute magnitudes have been obtained from the effective temperatures and gravities, the latter being used with assumed stellar masses to yield radii. The present results provide theoretical justification of the empirical formulas given by Crawford and by Stroemgren for the determination of absolute magnitudes and abundances from uvby photometry.
Document ID
19720031616
Document Type
Reprint (Version printed in journal)
Authors
Bell, R. A. (Maryland, University College Park, Md., United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1971
Publication Information
Publication: Royal Astronomical Society
Subject Category
SPACE SCIENCES
Funding Number(s)
CONTRACT_GRANT: NSG-398
CONTRACT_GRANT: NSF GP-13953
Distribution Limits
Public
Copyright
Other