Astrophysics.
نویسنده
چکیده
Using the oscillation frequencies of α Cen A recently discovered by Bouchy & Carrier (2001, 2002), the available astrometric, photometric and spectroscopic data, we tried to improve the calibration of the visual binary system α Cen. With the revisited masses of Pour-baix et al. (2002) we do not succeed to obtain a solution satisfying all the seismic observational constraints. Relaxing the constraints on the masses, we have found an age t α Cen = 4 850 ± 500 Myr, an initial helium mass fraction Y i = 0.300 ± 0.008, and an initial metallicity A&A manuscript no. (will be inserted by hand later) Your thesaurus codes are: missing; you have not inserted them ASTRONOMY AND ASTROPHYSICS Asteroseismology and calibration of α Cen binary system
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عنوان ژورنال:
- Science
دوره 206 4414 شماره
صفحات -
تاریخ انتشار 1979