2015A&A...579A.128D


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST19:36:35

2015A&A...579A.128D - Astronomy and Astrophysics, volume 579A, 128-128 (2015/7-1)

Stability of resonant configurations during the migration of planets and constraints on disk-planet interactions.

DELISLE J.-B., CORREIA A.C.M. and LASKAR J.

Abstract (from CDS):

We study the stability of mean-motion resonances (MMR) between two planets during their migration in a protoplanetary disk. We use an analytical model of resonances and describe the effect of the disk by a migration timescale (Tm,i) and an eccentricity damping timescale (Te,i) for each planet (i=1,2 for the inner and outer planets, respectively). We show that the resonant configuration is stable if Te,1/Te,2>(e1/e2)2. This general result can be used to put constraints on specific models of disk-planet interactions. For instance, using classical prescriptions for type-I migration, we show that when the angular momentum deficit (AMD) of the inner orbit is greater than the outer's orbit AMD, resonant systems must have a locally inverted disk density profile to stay locked in resonance during the migration. This inversion is very atypical of type-I migration and our criterion can thus provide an evidence against classical type-I migration. That is indeed the case for the Jupiter-mass resonant systems HD 60532b, c (3:1 MMR), GJ 876b, c (2:1 MMR), and HD 45364b, c (3:2 MMR). This result may be evidence of type-II migration (gap-opening planets), which is compatible with the high masses of these planets.

Abstract Copyright:

Journal keyword(s): celestial mechanics - planets and satellites: dynamical evolution and stability - planet-disk interactions

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 45364 PM* 06 25 38.4744251424 -31 28 51.428476346   8.82 8.06     G8V 98 1
2 HD 45364c Pl 06 25 38.4744251424 -31 28 51.428476346           ~ 20 1
3 HD 45364b Pl 06 25 38.4744251424 -31 28 51.428476346           ~ 18 1
4 HD 60532 PM* 07 34 03.1802404179 -22 17 45.838378187 5.02 4.94 4.39     F6IV-V 198 1
5 HD 60532c Pl 07 34 03.1802404179 -22 17 45.838378187           ~ 19 1
6 HD 60532b Pl 07 34 03.1802404179 -22 17 45.838378187           ~ 19 1
7 BD-15 6290 BY* 22 53 16.7323107416 -14 15 49.303409936 12.928 11.749 10.192 9.013 7.462 M3.5V 856 1
8 BD-15 6290b Pl 22 53 16.7323107416 -14 15 49.303409936           ~ 219 1
9 BD-15 6290c Pl 22 53 16.7323107416 -14 15 49.303409936           ~ 167 1

    Equat.    Gal    SGal    Ecl

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2020.07.14-19:36:35

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