Dead Zones and the Formation of Jovian Planets

Details Dead Zones and the Formation of Jovian Planets Dead Zones and the Formation of Jovian Planets

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004rmxac..22..108p&link_type=abstract

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

Astronomy and Astrophysics

Astrophysics

1

Accretion, Accretion Disks, Planets And Satellites: Formation, Stars: Planetary Systems

Scientific paper

Planets may complete their accretion when they become massive enough to open gaps in the face of disk viscosity. The prediction that gap-opening mass is related to disk viscosity implies that planetary masses are sensitive to the degree of ionization of the disk in the expected situation that viscosity is driven by magneto-turbulence by the well-known MRI instability. We show that in dead zones - poorly ionized regions wherein the MRI instability is unable to develop - only planets of terrestrial mass can form while Jovian planets form outside such regions. Dead zones extend out to 5-20 AU depending upon the disk column density.

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