Contamination of Planets
نویسندگان
چکیده
منابع مشابه
A New Family of Planets? “ocean-planets”
A new family of planets is considered which is in between the rocky terrestrial planets and the gaseous giants, “Ocean-Planets”. We present the possible formation, composition and internal structure of these putative planets. We consider their oceans, as well as their possible exobiology interest. These exoplanets should be detectable by Space missions such as Eddington, Kepler, and possibly CO...
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We study the evolution of a system consisting of two protoplanets still embedded in a protoplanetary disk. Results of two different numerical approaches are presented. In the first kind of model the motion of the disk material is followed by fully viscous hydrodynamical simulations, and the planetary motion is determined by N-body calculations including exactly the gravitational potential from ...
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Giant planets in circumstellar disks can migrate inward from their initial (formation) positions. Radial migration is caused by inward torques between the planet and the disk; by outward torques between the planet and the spinning star; and by outward torques due to Roche lobe overflow and consequent mass loss from the planet. We present self-consistent numerical considerations of the problem o...
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We review the interior structure and evolution of Jupiter, Saturn, Uranus and Neptune, and extrasolar giant planets with particular emphasis on constraining their global composition.
متن کاملThe Occurrence of Planets.
I wish to point out several errors and an inconsistency in Harrison Brown's report, "Planetary systems associated with main-sequence stars" (1). He begins by extrapolating the Salpeter luminosity function, which is nearly linear over an interval of 12 magnitudes, down to planetary masses. He then assumes that stars and planets are formed independently in groups of random size distribution. He c...
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ژورنال
عنوان ژورنال: Science
سال: 1967
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.157.3788.582-a