The 1992 detailed analyses of Alpha Centauri A and Alpha Centauri B

Details The 1992 detailed analyses of Alpha Centauri A and Alpha Centauri B The 1992 detailed analyses of Alpha Centauri A and Alpha Centauri B

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...263..219c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 263, no. 1-2, p. 219-231.

Astronomy and Astrophysics

Astrophysics

47

Astrometry, Metallicity, Reference Stars, Stellar Systems, Stellar Temperature, Astronomical Catalogs, Stellar Atmospheres, Stellar Evolution, Stellar Mass, Stellar Parallax, Stellar Spectrophotometry

Scientific paper

Two new detailed spectroscopic analyses of Alpha Cen A and B are presented. T(eff) = 5800 and 5325 K and (Fe/H) = +0.22 +/- 0.02 and +0.26 +/- 0.04 are found for Alpha Cen A and B respectively. A lithium abundance log N(lLi) = 1.4 +/- 0.3 is found for Alpha Cen A and an upper limit log N(Li) of 0.4 is found for Alpha Cen B. Observations of the Ca II infrared triplet indicate a low level of chromospheric activity for the two stars. The results are compared with those of previous spectral analyses.

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