SIMBAD references

2013AJ....145....1B - Astron. J., 145, 1 (2013/January-0)

Dissipative divergence of resonant orbits.

BATYGIN K. and MORBIDELLI A.

Abstract (from CDS):

A considerable fraction of multi-planet systems discovered by the observational surveys of extrasolar planets reside in mild proximity to first-order mean-motion resonances. However, the relative remoteness of such systems from nominal resonant period ratios (e.g., 2:1, 3:2, and 4:3) has been interpreted as evidence for lack of resonant interactions. Here, we show that a slow divergence away from exact commensurability is a natural outcome of dissipative evolution and demonstrate that libration of critical angles can be maintained tens of percent away from nominal resonance. We construct an analytical theory for the long-term dynamical evolution of dissipated resonant planetary pairs and confirm our calculations numerically. Collectively, our results suggest that a significant fraction of the near-commensurate extrasolar planets are in fact resonant and have undergone significant dissipative evolution.

Abstract Copyright:

Journal keyword(s): methods: analytical - methods: numerical - planets and satellites: general

Simbad objects: 4

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2019.10.14-14:17:28

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