Planetesimal formation in an evolving protoplanetary disk with a dead zone
نویسندگان
چکیده
منابع مشابه
Planetesimal formation by an axisymmetric radial bump of the column density of the gas in a protoplanetary disk
We investigate the effect of a radial pressure bump in a protoplanetary disk on planetesimal formation. We performed the two-dimensional numerical simulation of the dynamical interaction of solid particles and gas with an initially defined pressure bump under the assumption of axisymmetry. The aim of this work is to elucidate the effects of the stellar vertical gravity that were omitted in a pr...
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An unsolved issue in the standard core accretion model for gaseous planet formation is how kilometre-sized planetesimals form from, initially, micron-sized dust grains. Solid growth beyond metre sizes can be difficult both because the sticking efficiency becomes very small, and because these particles should rapidly migrate into the central star. We consider here how metre sized particles evolv...
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Disk evolution and chondrules: Historically it has often been tacitly supposed (e.g. [1]) that the protoplanetary disk evolved through four sequential stages: (1) production of CAIs and chondrules by the rapid (flash) melting of clumps of dust; (2) accretion of primitive planetesimals; (3) metamorphism and melting of those planetesimals; (4) collisional break-up of planetesimals and their aggre...
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The dynamics of planetesimals and planetary cores may be strongly influenced by density perturbations due to magnetorotational turbulence in their natal protoplanetary gas disks. Using the local shearing box approximation, we perform numerical simulations of planetesimals moving as massless particles in a turbulent, magnetized, unstratified gas disk. Our fiducial disk model has turbulent accret...
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The growth of Jovian mass planets during migration in their protoplanetary disks is one of the most important problems that needs to be solved in light of observations of the small orbital radii of exosolar planets. Studies of the migration of planets in standard gas disk models routinely show that the migration speeds are too high to form Jovian planets, and that such migrating planetary cores...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2019
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201833216