Estimation of stellar intrinsic colours, distances and colour excesses based on the Stromgren and H-beta photometry of 804 B, A, and F stars in 10 Selected Areas

Details Estimation of stellar intrinsic colours, distances and colour excesses based on the Stromgren and H-beta photometry of 804 B, A, and F stars in 10 Selected Areas Estimation of stellar intrinsic colours, distances and colour excesses based on the Stromgren and H-beta photometry of 804 B, A, and F stars in 10 Selected Areas

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26as...78..105f&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 78, no. 1, April 1989, p. 105-123. Research supported by Coo

Astronomy and Astrophysics

Astrophysics

15

Distance, H Beta Line, Interstellar Extinction, Stellar Color, Stellar Spectrophotometry, Ultraviolet Photometry, Visual Photometry, A Stars, B Stars, Early Stars, Error Analysis, F Stars, Late Stars, Peculiar Stars, Tables (Data), Ubv Spectra

Scientific paper

Four-colour uvby and Hβ photometry previously obtained for 804 stars, mainly of spectral types A and F is used to derive the intrinsic colours, distances and colour excesses for 648 A and F stars, and for 22 B type stars. The results will further be used to investigate the interstellar reddening distribution within 10 volumes in the solar vicinity. The results give Mv, (b - y)0, [m1], δm1, [c1], δc1, [u - b], E (b - y) and the distance for A and F type stars, and Mv, (b - Y)o' mO, co, 8p, [u - b], E(b - y) and the distance for B type stars, respectively. Among the 134 remaining stars several appear to be peculiar, on the basis of the uvbyβ photometry. For most of them a photometric spectral type was estimated, and, when possible a comparison with MK classification is given.

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