0000000000880430

AUTHOR

J. Buitrago

showing 2 related works from this author

Radiation forces and the formation of planetary systems

1990

We briefly support on some new results about the influence of the rotation and finite size of a stellar radiation source on dust particle orbits, emphasizing the possibility of stable orbits, in the equatorial plane, for dust sizes near the radiation pressure limit.

PhysicsStellar rotationAstronomyAstronomy and AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsRadiationPlanetary systemRotationRadiation pressureSpace and Planetary ScienceAstrophysics::Solar and Stellar AstrophysicsAstrophysics::Earth and Planetary AstrophysicsPoynting–Robertson effectStellar evolutionAstrophysics::Galaxy AstrophysicsCosmic dustAstrophysics and Space Science
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An idealized mechanism for the orbital migration of protoplanets

1993

We report here how the action of radiation forces on small solid particles in a circumstellar disc could induce a suitable mechanism for orbital migration of protoplanets. The ratio of radiation-to-gravitational forces acting on a particle depends on its physical and chemical properties. As a consequence of this fact, we show that different particles following the same trajectory would move with different velocities. Sufficiently large bodies, insensitive to radiation forces, would accrete dust particles that are moving more slowly, thus spiralling towards the central star and transporting mass and angular momentum from the outer to the inner parts of the circumstellar disc. In the case of …

PhysicsSolar SystemAngular momentumAstronomy and AstrophysicsPlanetary systemAccretion (astrophysics)Classical mechanicsRadiation pressureSpace and Planetary ScienceAstrophysics::Earth and Planetary AstrophysicsFormation and evolution of the Solar SystemProtoplanetAstrophysics::Galaxy AstrophysicsCosmic dustMonthly Notices of the Royal Astronomical Society
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