The formation of protostellar disks. I - 1 M(solar)
1993; IOP Publishing; Volume: 411; Linguagem: Inglês
10.1086/172827
ISSN1538-4357
AutoresH. W. Yorke, Peter Bodenheimer, Gregory Laughlin,
Tópico(s)Atmospheric Ozone and Climate
Resumoview Abstract Citations (116) References (42) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Formation of Protostellar Disks. I. 1 M sub sun Yorke, Harold W. ; Bodenheimer, Peter ; Laughlin, Gregory Abstract Hydrodynamical calculations of the collapse of an axisymmetric, rotating one solar mass protostellar cloud, including the effects of radiative transfer and radiative acceleration but without magnetic fields, are presented. The results include calculations of infrared protostellar spectra as a function of time and viewing angle. A numerical algorithm involving explicit nested grids is used to resolve the region of initial disk formation and at the same time to include the outer regions in the calculation. The central part of the protostar is modeled approximately. Initial conditions are systematically varied to investigate their influence on the evolution and final configuration of central star plus circumstellar disk. The initial state for the standard case is a centrally condensed molecular cloud core of one solar mass with a mean density of 8 x 10 exp -18 g/cu cm and a specific angular momentum at the outer edge of 7 x 10 exp 20 sq cm/s. The collapse is followed for 8 x 10 exp 4 yr, at which point 0.45 solar mass is contained in a rapidly rotating central object and most of the remainder in a surrounding equilibrium disk. The stability of this final structure is qualitatively analyzed. Publication: The Astrophysical Journal Pub Date: July 1993 DOI: 10.1086/172827 Bibcode: 1993ApJ...411..274Y Keywords: Gravitational Collapse; Molecular Clouds; Protostars; Star Formation; Stellar Mass; Angular Momentum; Angular Velocity; Interstellar Matter; Magnetic Clouds; Astrophysics; HYDRODYNAMICS; ISM: CLOUDS; METHODS: NUMERICAL; SOLAR SYSTEM: FORMATION; STARS: FORMATION full text sources ADS | Related Materials (2) Part 2: 1995ApJ...443..199Y Part 3: 1999ApJ...525..330Y
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