Astronomy and Astrophysics – Astrophysics – Earth and Planetary Astrophysics
Scientific paper
2009-04-30
Astronomy and Astrophysics
Astrophysics
Earth and Planetary Astrophysics
9 pages, 6 figures, accepted for publication in MNRAS
Scientific paper
We investigate the properties of circumplanetary discs formed in three-dimensional, self-gravitating radiation hydrodynamical models of gas accretion by protoplanets. We determine disc sizes, scaleheights, and density and temperature profiles for different protoplanet masses, in solar nebulae of differing grain opacities. We find that the analytical prediction of circumplanetary disc radii in an evacuated gap (R_Hill/3) from Quillen & Trilling (1998) yields a good estimate for discs formed by high mass protoplanets. The radial density profiles of the circumplanetary discs may be described by power-laws between r^-2 and r^-3/2. We find no evidence for the ring-like density enhancements that have been found in some previous models of circumplanetary discs. Temperature profiles follow a ~r^-7/10 power-law regardless of protoplanet mass or nebula grain opacity. The discs invariably have large scaleheights (H/r > 0.2), making them thick in comparison with their encompassing circumstellar discs, and they show no flaring.
Ayliffe Ben A.
Bate Matthew R.
No associations
LandOfFree
Circumplanetary disc properties obtained from radiation hydrodynamical simulations of gas accretion by protoplanets does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Circumplanetary disc properties obtained from radiation hydrodynamical simulations of gas accretion by protoplanets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circumplanetary disc properties obtained from radiation hydrodynamical simulations of gas accretion by protoplanets will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-443866