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- W2000400142 abstract "We examined the gravitational contraction of isothermal molecular cloud cores with slow rotation by means of two-dimensional numerical simulations. Applying a sink-cell method, we followed the evolution of the cloud cores up to the stages at which most of the matter accretes onto the central region (i.e., a protostar and a rotationally supported circumstellar disk). We show that both an infalling disklike envelope and a rotationally supported disk around the central star are natural outcomes of the gravitational contraction of a prolate cloud core with slow rotation. The early evolution of infalling envelopes resembles sheet models recently proposed by Hartmann and coworkers. In the infalling disklike envelope, the radial profiles of density, radial velocity, and azimuthal velocity can be approximated by ρ ∝ r-1.5, vr ∝ r-0.5, and v ∝ r-1, respectively. The fate of infalling envelopes is also discussed." @default.
- W2000400142 created "2016-06-24" @default.
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- W2000400142 date "2000-11-01" @default.
- W2000400142 modified "2023-09-27" @default.
- W2000400142 title "Formation of an Infalling Disklike Envelope around a Protostar" @default.
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- W2000400142 doi "https://doi.org/10.1086/317113" @default.
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