2012MNRAS.421.1736P

Query : 2012MNRAS.421.1736P

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

Full paper

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Number of rows : 2

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	BD+35 3293	V*	18 34 31.6252443960	+35 39 41.491899468		11.07	10.63	10.52		F7V	143	1
2	BD-15 6290	BY*	22 53 16.7325836486	-14 15 49.304052185	12.928	11.749	10.192	9.013	7.462	M3.5V	1106	1

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