Mathematics – Logic
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...361..621s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 361, Oct. 1, 1990, p. 621-643. Research supported by the Ministero per l'Un
Mathematics
Logic
48
Heao 2, Hertzsprung-Russell Diagram, O Stars, Optical Properties, Stellar Luminosity, X Ray Stars, Bolometers, Logarithms, Spatial Distribution
Scientific paper
An X-ray luminosity function is derived for a representative volume-limited sample of O-type stars selected from the catalog of Galactic O stars surveyed with the Einstein Observatory. It was found that, for the stars of this sample which is ten times larger than any previously analyzed, the level of X-ray emission is strongly correlated with bolometric luminosity, confirming previous findings of an Lx-L(bol) relationship (e.g., Harnden et al., 1979; Pallavicini et al., 1981). Correlations between the Lx and the mass loss rate with the wind terminal velocity or with the rotation rate were weak. However, there was a strong correlation with wind momentum flux as well as with the wind kinetic energy flux.
Harnden Frank R. Jr.
Morossi Carlo
Ramella Massimo
Rosner Robert
Schmitt Juergen H. M. M.
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