Limb-darkening and metal abundances in the sdOB primary of the eclipsing binary LB 3459 (AA Dor)

Details Limb-darkening and metal abundances in the sdOB primary of the eclipsing binary LB 3459 (AA Dor) Limb-darkening and metal abundances in the sdOB primary of the eclipsing binary LB 3459 (AA Dor)

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.218..285l&link_type=abstract

In ESA Fourth European IUE Conf. p 285-189 (SEE N84-35135 24-88)

Computer Science

6

Abundance, Limb Darkening, Subdwarf Stars, Carbon, Helium, Iue, Silicon, Stellar Spectra

Scientific paper

The LB 3459 is an eclipsing binary, consisting of a near degenerate secondary (of solar composition) and a subdwarf OB primary. Low resolution IUE spectra were obtained before and during primary eclipse. Secondary radius = (0.53 + or - 0.03) primary radius; primary limb darkening is predicted by the non-LTE model atmosphere. Metal abundances derived from high resolution SWP spectra might be explained by diffusion, which is also proposed as an explanation for helium depletion.

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