Monte Carlo simulations on orbital elements and abundance of barium stars

Details Monte Carlo simulations on orbital elements and abundance of barium stars Monte Carlo simulations on orbital elements and abundance of barium stars

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003acasn..44..116s&link_type=abstract

Acta Astronomica Sinica, vol. 44, no. 2, p. 116-125

Astronomy and Astrophysics

Astronomy

Stars: Chemically Peculiar, Stars: Winds, Outflows, Accretion, Stars: Abundances

Scientific paper

Carrying out a series of Monte-Carlo simulations, the changes of orbital elements of binaries are recalculated for wind accretion scenario of the total angular momentum conservation. As Ba star systems are evolved from G-K star systems, the distribution of orbital eccentricities and periods of Ba stars can show the final orbital character of binaries. Our results show that, during the evolution of a binary system, the system widens as it loses mass, and the orbital period increase, while orbital eccentricity remains nearly constant, which can explain the distribution regulation of orbital elements of normal G, K giant and barium stars and the distribution character of the heavy-element abundances of barium stars.

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