A general theory of turbulent fragmentation
نویسندگان
چکیده
منابع مشابه
Mass Spectra from Turbulent Fragmentation
Turbulent fragmentation determines where and when protostellar cores form, and how they contract and grow in mass from the surrounding cloud material. This process is investigated, using numerical models of molecular cloud dynamics. Molecular cloud regions without turbulent driving sources, or where turbulence is driven on large scales, exhibit rapid and efficient star formation in a clustered ...
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The origin of brown dwarfs (BDs) is an important component of the theory of star formation, because BDs are approximately as numerous as solar mass stars. It has been suggested that BDs originate from the gravitational fragmentation of protostellar disks, a very different mechanism from the formation of hydrogen burning stars. We propose that BDs are instead formed by the process of turbulent f...
متن کاملStar Formation from Turbulent Fragmentation
Star formation is intimately linked to the dynamical evolution of molecular clouds. Turbulent fragmentation determines where and when protostellar cores form, and how they contract and grow in mass via accretion from the surrounding cloud material. Efficiency, spatial distribution and timescale of star formation in turbulent clouds are estimated by comparing numerical models of self-gravitating...
متن کاملSupersonic Turbulent Flows and the Fragmentation of a Cold Medium
The role played by velocity elds in the fragmentation of a cold medium and in the formation of protostars is studied. The velocity eld is modeled with a compressible turbulent ow. A supersonic turbulent velocity eld can fragment the medium into clumps of mass smaller than a local Jeans' mass, and therefore stabilize the medium against the formation of protostars. Based on this idea, the protost...
متن کاملThe Stellar IMF from Turbulent Fragmentation
The morphology and kinematics of molecular clouds (MCs) are best explained as the consequence of super–sonic turbulence. Super–sonic turbulence fragments MCs into dense sheets, filaments and cores and large low density “voids”, via the action of highly radiative shocks. We refer to this process as turbulent fragmentation. In this work we derive the mass distribution of dense cores due to turbul...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2013
ISSN: 1365-2966,0035-8711
DOI: 10.1093/mnras/sts704