Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-07-04
Astrophys.J. 575 (2002) L33-L36
Astronomy and Astrophysics
Astrophysics
to appear in ApJ-Letters
Scientific paper
10.1086/342637
We show that in a system of two planets initially in nearly circular orbits, an impulse perturbation that imparts a finite eccentricity to one planet's orbit causes the other planet's orbit to become eccentric as well, and also naturally results in a libration of their relative apsidal longitudes for a wide range of initial conditions. We suggest that such a mechanism may explain orbital eccentricities and apsidal resonance in some exo-planetary systems. The eccentricity impulse could be caused by the ejection of a planet from these systems, or by torques from a primordial gas disk. The amplitude of secular variations provides an observational constraint on the dynamical history of such systems.
No associations
LandOfFree
A dynamical mechanism for establishing apsidal resonance 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 A dynamical mechanism for establishing apsidal resonance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A dynamical mechanism for establishing apsidal resonance will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-586682