SIMBAD references

2012MNRAS.421.1736P - Mon. Not. R. Astron. Soc., 421, 1736-1756 (2012/April-1)

Outward migration of a super-Earth in a disc with outward propagating density waves excited by a giant planet.

PODLEWSKA-GACA E., PAPALOIZOU J.C.B. and SZUSZKIEWICZ E.

Abstract (from CDS):

In this paper, we consider a new mechanism for stopping the inward migration of a low-mass planet embedded in a gaseous protoplanetary disc. It operates when a low-mass planet (for example a super-Earth) encounters outgoing density waves excited by another source in the disc. This source could be a gas giant in an orbit interior to that of the low-mass planet. As the super-Earth passes through the wave field, angular momentum is transferred to the disc material and then communicated to the planet through co-orbital dynamics, with the consequence that its inward migration can be halted or even reversed.

We illustrate how the mechanism we consider works in a variety of different physical conditions employing global two-dimensional hydrodynamical calculations. We confirm our results by performing local shearing box simulations in which the super-Earth interacts with density waves excited by an independent harmonically varying potential. Finally, we discuss the constraints arising from the process considered here, on formation scenarios for systems containing a giant planet and lower mass planet in an outer orbit with a 2:1 commensurability such as GJ 876.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): methods: numerical - planets and satellites: formation - planet–disc interactions

Simbad objects: 2

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