Effective Temperature Bolometric Correction and Mass Calibration of O-F

Details Effective Temperature Bolometric Correction and Mass Calibration of O-F Effective Temperature Bolometric Correction and Mass Calibration of O-F

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.268..119b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 268, NO. 1/MAY1, P. 119, 1994

Astronomy and Astrophysics

Astronomy

109

Stars: Atmospheres - Stars: Early-Type - Stars: Fundamental Parameters

Scientific paper

We discuss the determination of effective temperature, bolometric correction and surface gravity using Strömgren indices. We use synthetic colours to define the functional relationship over a wide range of surface gravity, and calibrate the relationship by means of stars with well-determined effective temperatures and surface gravities. The calibrations are presented as interpolation formulae, valid for 0-F stars. We find that the latest evolutionary computations predict masses that agree with those from detached eclipsing binaries to within 7 per cent. We discuss the position of the zero-age main sequence from the models relative to that observed in two young open clusters. There is a serious discrepancy between the surface gravity calculated from model atmospheres and from evolutionary models.

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