Gravitational Instabilities in Disks: From Polytropes to Protoplanets?

Details Gravitational Instabilities in Disks: From Polytropes to Protoplanets? Gravitational Instabilities in Disks: From Polytropes to Protoplanets?

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004rmxac..22...58d&link_type=abstract

Gravitational Collapse: From Massive Stars to Planets. / First Astrophysics meeting of the Observatorio Astronomico Nacional. /

Astronomy and Astrophysics

Astrophysics

2

Hydrodynamics, Instabilities, Stars: Planetary Systems: Formation, Stars: Planetary Systems: Protoplanetary Disks

Scientific paper

Gravitational instabilities (GI's) probably occur in disks around young stellar objects during their early embedded phase. This paper reviews what is known about the nonlinear consequences of GI's for planet formation and disk evolution. All researchers agree that, for sufficiently fast cooling, disks fragment into dense clumps or arclike structures, but there is no universal agreement about whether fast enough cooling to cause fragmentation ever occurs and, if it does, whether any clumps that form will become bound protoplanets.

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