Hidden planetary friends: on the stability of two-planet systems in the presence of a distant, inclined companion
Hidden planetary friends: on the stability of two-planet systems in the presence of a distant, inclined companion
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隐藏的行星朋友:在有一个遥远的、倾斜的伴星存在的情况下,关于两行星系统的稳定性
DOI:
10.1093/mnras/sty2830
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发表时间:
2018
影响因子:
4.8
通讯作者:
Farr, Will M
中科院分区:
文献类型:
--
作者:
Denham, Paul;Naoz, Smadar;Hoang, Bao-Minh;Stephan, Alexander P;Farr, Will M
Recent observational campaigns have shown that multiplanet systems seem to be abundant in our Galaxy. Moreover, it seems that these systems might have distant companions, either planets, brown-dwarfs, or other stellar objects. These companions might be inclined with respect to the inner planets, and could potentially excite the eccentricities of the inner planets through the Eccentric Kozai–Lidov mechanism. These eccentricity excitations could perhaps cause the inner orbits to cross, disrupting the inner system. We study the stability of two-planet systems in the presence of a distant, inclined, giant planet. Specifically, we derive a stability criterion, which depends on the companion’s separation and eccentricity. We show that our analytic criterion agrees with the results obtained from numerically integrating an ensemble of systems both secularly and withN-body simulations. Finally, as a potential proof-of-concept, we provide a set of predictions for the parameter space that allows the existence of planetary companions for the Kepler-56, Kepler-448, Kepler-88, Kepler-109, and Kepler-36 systems.
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DOI:
10.1088/0004-637x/786/2/101
发表时间:
2014
期刊:
The Astrophysical Journal
影响因子:
--
作者:
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通讯作者:
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2013
期刊:
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影响因子:
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作者:
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DOI:
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发表时间:
2015
期刊:
Proceedings of the National Academy of Sciences
影响因子:
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作者:
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通讯作者:
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DOI:
10.1086/589232
发表时间:
2008
期刊:
The Astrophysical Journal
影响因子:
--
作者:
K. Batygin;G. Laughlin
通讯作者:
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DOI:
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发表时间:
2017
期刊:
影响因子:
--
作者:
Marshall C. Johnson;W. Cochran;B. Addison;C. Tinney;D. Wright
通讯作者:
D. Wright