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Author Artymowicz, Pawel
Source CiteSeerX
Content type Text
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Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword New Insight ♦ Observational Technique ♦ Predetermined Direction ♦ Observed Variety ♦ Protoplanetary Disk ♦ Motivated Theorist ♦ Planet-planet Interaction ♦ Rst Simulation ♦ Several Theory ♦ Planet Migration ♦ New Mode ♦ Elliptic Orbit ♦ Extrasolar Planetary System ♦ High Density ♦ Primordial Disk-planet Interaction ♦ Exoplanet Mass ♦ Initial Disk Density Dis ♦ Important Extension ♦ Planetary Eccentric-ity Pumping
Abstract Abstract. We review several theories of origin and evolution of the recently discovered extrasolar planetary systems. The properties of these systems were unexpected. This motivated theorists to extend and revise many preexisting the-ories. Important extensions include migration of bodies and planetary eccentric-ity pumping by planet-planet interaction, and primordial disk-planet interaction. Progress in observational techniques might allow us to nd which of these two types of interaction is mainly responsible for the observed variety of orbits and exoplanet masses. New insights into the formation of our own system can be gained by asking why Jupiter and Saturn are not larger, closer to the sun and/or do not follow noticeably elliptic orbits. Scenarios of planet migration in disks may change markedly on account of a new mode of migration, which does not have a predetermined direction in a given protoplanetary disk, provided it has zones of low and high density. We present the rst simulations of planets undergoing a rapid (runaway) migration. Migration can be inward or outward, depending on the initial disk density dis-
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article