On the Ages of Planetary Systems with Mean-motion Resonances
Abstract
We present preliminary though statistically significant evidence that shows that multiplanetary systems that exhibit a 2/1 period commensurability are in general younger than multiplanetary systems without commensurabilities, or even systems with other commensurabilities. An immediate possible conclusion is that the 2/1 mean-motion resonance in planetary systems tends to be disrupted after typically a few Gyrs.
- Publication:
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The Astrophysical Journal
- Pub Date:
- November 2011
- DOI:
- 10.1088/2041-8205/741/1/L23
- arXiv:
- arXiv:1109.6671
- Bibcode:
- 2011ApJ...741L..23K
- Keywords:
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- celestial mechanics;
- methods: statistical;
- planetary systems;
- planets and satellites: dynamical evolution and stability;
- stars: statistics;
- Astrophysics - Earth and Planetary Astrophysics
- E-Print:
- 15 pages, 2 tables. Accepted for publication in the Astrophysical Journal Letters