Accretion disc response to a stellar fly-by

Details Accretion disc response to a stellar fly-by Accretion disc response to a stellar fly-by

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.261..190c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 261, no. 1, p. 190-202.

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68

Accretion Disks, Stellar Mass Accretion, Stellar Motions, Astronomical Models, Binary Stars, Star Formation, Stellar Orbits

Scientific paper

We investigate the effect on an accretion disk around one star of a parabolic fly-by of another. In the prograde, coplanar encounter, the disk is tidally stripped down to about one half of the periastron radius, and a substantial fraction of the stripped material is captured by the intruder. In the retrograde, coplanar encounter, the disk is essentially unaffected within periastron. We also consider an encounter in which the disk and orbit are initially orthogonal; here, the disk outside periastron is only partially tidally stripped, essentially no material is captured by the intruder, and the disk which remains is twisted. We comment briefly on the significance of the above results to models of binary star formation.

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