Circumstellar and Circumbinary Disks in Eccentric Stellar Binaries

Details Circumstellar and Circumbinary Disks in Eccentric Stellar Binaries Circumstellar and Circumbinary Disks in Eccentric Stellar Binaries

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008rmxac..34...91a&link_type=abstract

IV Reunión sobre Astronomía Dinámica en Latino América (Eds. C. Allen, A. Ruelas, & R. Teixeira) Revista Mexicana de Astronomía

Astronomy and Astrophysics

Astronomy

1

Planetary Systems: Protoplanetary Disks, Stars: Binaries, Stars: Circumstellar Matter, Stellar Dynamics

Scientific paper

We study the existence of stable trajectories, where gas could accumulate to form accretion discs, around stars that form binary systems in eccentric orbits. Since the potential is time dependent, no fixed, periodic, close orbits exist. Instead, we search for invariant loops: closed curves that change shape in synchronism with the binary orbital phase. Non-intersecting loops can provide the scaffolding for circumstellar and circumbinary discs in these systems. We investigate the range of regions in phase space where these non-intersecting loops can exist and find this to depend on both, the mass ratio of the stars and their orbital eccentricity, with a strong dependence on the latter. The recent discovery of planets within close binary systems makes this work very relevant.

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