Astronomy and Astrophysics – Astrophysics – Earth and Planetary Astrophysics
Scientific paper
2010-05-03
Astronomy and Astrophysics
Astrophysics
Earth and Planetary Astrophysics
23 pages, 22 figures, ApJ accepted
Scientific paper
We study the dynamical stability of planetary systems consisting of one hypothetical terrestrial mass planet ($1 $ or $10 \mearth$) and one massive planet ($10 \mearth - 10 \mjup$). We consider masses and orbits that cover the range of observed planetary system architectures (including non-zero initial eccentricities), determine the stability limit through N-body simulations, and compare it to the analytic Hill stability boundary. We show that for given masses and orbits of a two planet system, a single parameter, which can be calculated analytically, describes the Lagrange stability boundary (no ejections or exchanges) but which diverges significantly from the Hill stability boundary. However, we do find that the actual boundary is fractal, and therefore we also identify a second parameter which demarcates the transition from stable to unstable evolution. We show the portions of the habitable zones of $\rho$ CrB, HD 164922, GJ 674, and HD 7924 which can support a terrestrial planet. These analyses clarify the stability boundaries in exoplanetary systems and demonstrate that, for most exoplanetary systems, numerical simulations of the stability of potentially habitable planets are only necessary over a narrow region of parameter space. Finally we also identify and provide a catalog of known systems which can host terrestrial planets in their habitable zones.
Barnes Rory
Kopparapu Ravi Kumar
No associations
LandOfFree
Stability analysis of single planet systems and their habitable zones 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 Stability analysis of single planet systems and their habitable zones, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stability analysis of single planet systems and their habitable zones will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-530990