Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010a%26a...516a..82f&link_type=abstract
Astronomy and Astrophysics, Volume 516, id.A82
Astronomy and Astrophysics
Astrophysics
Planets And Satellites: General, Celestial Mechanics
Scientific paper
Aims: We investigate the dynamical stability of compact planetary systems in the CoRoT discovery space, i.e., with orbital periods of less than 50 days, including a detailed study of the stability of systems, which are spaced according to Hill's criteria. Methods: The innermost fictitious planet was placed close to the Roche limit from the star (MStar = 1 MSun) and all other fictitious planets are lined up according to Hill's criteria up to a distance of 0.26 AU, which corresponds to a 50 day period for a Sun-massed star. For the masses of the fictitious planets, we chose a range of 0.33-17 mEarth, where in each simulation all fictitious planets have the same mass. Additionally, we tested the influence of both the semi-major axis of the innermost planet and of the number of planets. In a next step we also included a gas giant in our calculations, which perturbs the inner ones and investigated their stability. Results: With numerous integrations of many different configurations we could show that long-time stable motion is possible for up to 10 planets with 17 mEarth within a distance of 0.26 AU. Further investigations show that the fictitious planets remain stable under certain circumstances even if a close-in gas giant is present.
Eggl Siegfried
Funk Barbara
Pilat-Lohinger Elke
Schwarz Ralf
Wuchterl Guenther
No associations
LandOfFree
The stability of ultra-compact planetary systems 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 The stability of ultra-compact planetary systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The stability of ultra-compact planetary systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1344409