Physics
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26as...87..319f&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 87, no. 2, Feb. 1991, p. 319-334. Research supported by CICY
Physics
34
A Stars, H Beta Line, Stellar Physics, Stellar Spectrophotometry, Ubv Spectra, Astronomical Catalogs, Metallicity, Stellar Gravitation, Stellar Magnitude, Stellar Temperature
Scientific paper
uvby H-beta photometry has been obtained for a sample of 93 selected main sequence A stars. The purpose was to determine accurate effective temperatures, surface gravities, and absolute magnitudes for an individual determination of ages and parallaxes, which have to be included in a more extensive work analyzing the kinematic properties of A V stars. Several calibrations and methods to determine the above mentioned parameters have been reviewed, allowing the design of a new algorithm for their determination. The results obtained using this procedure were tested in a previous paper using uvby H-beta data from the Hauck and Mermilliod catalogue, and comparing the rusulting temperatures, surface gravities and absolute magnitudes with empirical determinations of these parameters.
Figueras F.
Jordi Carme
Torra Jordi
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