A&A 425, L9-L12 (2004)
Planets opening dust gaps in gas disksS.-J. Paardekooper1 and G. Mellema2, 1
1 Leiden Observatory, Postbus 9513, 2300 RA Leiden, The Netherlands
2 ASTRON, Postbus 2, 7990 AA Dwingeloo, The Netherlands
(Received 7 July 2004 / Accepted 10 August 2004 )
We investigate the interaction of gas and dust in a protoplanetary disk in the presence of a massive planet using a new two-fluid hydrodynamics code. In view of future observations of planet-forming disks we focus on the condition for gap formation in the dust fluid. While only planets more massive than 1 Jupiter mass ( ) open up a gap in the gas disk, we find that a planet of 0.1 already creates a gap in the dust disk. This makes it easier to find lower-mass planets orbiting in their protoplanetary disk if there is a significant population of mm-sized particles.
Key words: hydrodynamics -- stars: planetary systems
© ESO 2004