Numerical modeling of gravitational instability outcomes in multiphase circumstellar discs

To suggest consistent route toward planetesimal and planetary core formation in circumstellar discs we study gravitational instability outcomes in massive multiphase (gas-collisionless bodies) disc. Such unstable massive disc can be formed together with protostar in molecular cloud collapse with inc...

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Bibliographic Details
Published in:EPJ Web of conferences 2013-01, Vol.46, p.7005-07005
Main Authors: Stoyanovskaya, Olga P., Snytnikov, Valeriy N.
Format: Article
Language:English
Subjects:
Clumps
Discs
Disks
Formations
Gas density
Gravitational instability
Mathematical models
Multiphase
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Summary:To suggest consistent route toward planetesimal and planetary core formation in circumstellar discs we study gravitational instability outcomes in massive multiphase (gas-collisionless bodies) disc. Such unstable massive disc can be formed together with protostar in molecular cloud collapse with increased ratio of solids to gas density. In our calculations we found regimes when low-massive solid bodies subdisc drastically affect global structure formation in the disc, whose mass is constituted mainly by the gas. We demonstrated also that solitary areas of high gas density can concentrate solids, producing multiphase clumps, which can be considered as a cradle of large bodies formation.
ISSN:2100-014X
2100-014X
DOI:10.1051/epjconf/20134607005