Numerical simulations of protostellar encounters - I. Star-disc encounters
نویسندگان
چکیده
منابع مشابه
Numerical simulations of protostellar encounters I . Star - disc encounters
It appears that most stars are born in clusters, and that at birth most stars have circumstellar discs which are comparable in size to the separations between the stars. Interactions between neighbouring stars and discs are therefore likely to play a key rôle in determining disc lifetimes, stellar masses, and the separations and eccentricities of binary orbits. Such interactions may also cause ...
متن کاملNumerical simulations of protostellar encounters II . Coplanar disc - disc encounters
It is expected that an average protostar will undergo at least one impulsive interaction with a neighbouring protostar whilst a large fraction of its mass is still in a massive, extended disc. Such interactions must have a significant impact upon the evolution of the protostars and their discs. We have carried out a series of simulations of coplanar encounters between two stars, each possessing...
متن کاملNumerical simulations of protostellar encounters III . Non - coplanar disc - disc encounters
It is expected that an average protostar will undergo at least one impulsive interaction with a neighbouring protostar whilst a large fraction of its mass is still in a massive, extended disc. If protostars are formed individually within a cluster before falling together and interacting, there should be no preferred orientation for such interactions. As star formation within clusters is believe...
متن کاملA Numerical Study of Brown Dwarf Formation via Encounters of Protostellar Disks
The formation of brown dwarfs (BDs) due to the fragmentation of early-stage proto-stellar disks undergoing pairwise encounters was investigated. High resolution allowed the use of realistic, flared initial disk models where both the vertical structure and the local Jeans mass were resolved, preventing numerical enhancement or suppression of fragmentation. The results show that objects with mass...
متن کاملProto-brown Dwarf Disks as Products of Protostellar Disk Encounters
The formation of brown dwarfs via encounters between proto-stars has been confirmed with highresolution numerical simulations with a restricted treatment of the thermal conditions. The new results indicate that young brown dwarfs (BDs) formed this way are disk-like and often reside in multiple systems. The newly-formed proto-BDs disks are up to 18 AU in size and spin rapidly making smallscale b...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1998
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.1998.t01-1-01986.x