Space velocities and ages of nearby early-type stars

Details Space velocities and ages of nearby early-type stars Space velocities and ages of nearby early-type stars

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26as...32..409g&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 32, June 1978, p. 409-421.

Astronomy and Astrophysics

Astrophysics

41

Early Stars, Stellar Evolution, Stellar Spectrophotometry, Velocity Distribution, A Stars, Age Factor, Astronomical Coordinates, B Stars, Milky Way Galaxy, Stellar Mass, Stellar Motions

Scientific paper

Photometric distances and space velocities have been calculated for 458 B0-A0 stars with apparent magnitudes not exceeding 6.5. Using Stromgren's ubvy-beta photometry the effective temperature and the position in bolometric magnitude over the zero-age main sequence of the stars were derived. These quantities were used to obtain age and mass for 423 of the stars by interpolation in the models of stellar evolution for the chemical composition (X Z) = (0.7, 0.03). A relation for deriving interstellar reddening for normal stars in the intermediate group is given.

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