Another look at the early-type eclipsing binary BF Aurigae

Details Another look at the early-type eclipsing binary BF Aurigae Another look at the early-type eclipsing binary BF Aurigae

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...265..613k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 265, no. 2, p. 613-625.

Astronomy and Astrophysics

Astrophysics

5

B Stars, Eclipsing Binary Stars, Main Sequence Stars, Light Curve, Stellar Evolution, Stellar Mass, Stellar Spectrophotometry, Stellar Winds

Scientific paper

Since the question of the mass ratio of the early-type system BF Aur has not yet fully been clarified, we reanalyze existing B and V light curve data from the literature with special consideration to the photometric mass ratio, which we determine as q = 1.05 +/- 0.05. The basic indeterminacy in q(phot) resulting from the light curve shape, i.e., the impossibility to decide from photometry alone which star is in front at primary minimum, is overcome by considering the spectral line ratios. The finally adopted stellar parameters are consistent with available Stromgren indices for BF Aur. We confirm earlier conclusions that the more massive component is almost filling its Roche lobe. At present, there are no indications of mass transfer or period changes. The light curves, however, show some wavelength-dependent extra light and disturbances around phase 0.25 that might be related to stellar winds.

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