Stable chaos in the 55Cnc exoplanetary system?

被引：9

作者：

Gayon, J. ^{[1
]}

Marzari, F. ^{[2
]}

Scholl, H. ^{[1
]}

机构：

[1] Univ Nice Sophia Antipolis, CNRS, Observ Cote Azur, Lab Cassiopee, F-06304 Nice, France

[2] Univ Padua, Dept Phys, I-35131 Padua, Italy

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2008年 / 389卷 / 01期

关键词：

planets and satellites : formation; stars : individual : 55Cnc; planetary systems : formation;

D O I：

10.1111/j.1745-3933.2008.00505.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The five planets discovered around the main-sequence star 55Cnc may represent a case of stable chaos. By using both the Frequency Map Analysis and MEGNO, we find that about 15 per cent of the systems that can be build from the nominal orbital elements of the system are highly chaotic. However, in spite of the fast diffusion rate in the phase space, the planetary system is not destabilized over 400 Myr and close encounters between the planets are avoided.

引用

页码：L1 / L3

页数：3

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