Alpha Centauri revisited

Details Alpha Centauri revisited Alpha Centauri revisited

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...268..650n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 268, no. 2, p. 650-652.

Astronomy and Astrophysics

Astrophysics

11

Opacity, Stellar Envelopes, Stellar Temperature, Metallicity, Stellar Convection, Stellar Evolution, Stellar Models

Scientific paper

Sets of new low temperature opacities have been computed for different Z values and compared with Kurucz (1992) new envelope opacities for a solar Z value. We applied these data together with the new OPAL opacities to recalibrate the Delta Centauri system. Our solution favors a high value for the metallicity, Z about 2 Z(solar), and a unique convection parameter for both stars. With the Te's values given by Chmielewski et al. (1992) and taken at the limit of their error bars to increase the T(e) difference between both components, it is even possible to reproduce exactly the Z-value they derived from their spectral analysis.

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