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Formation of S-type planets in close binaries: tidal capture of circumbinary planets

Published online by Cambridge University Press:  13 January 2020

Jianghui Ji  and
Yan-Xiang Gong
Jianghui Ji
Affiliation:
CAS Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China email: jijh@pmo.ac.cn
Yan-Xiang Gong
Affiliation:
CAS Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China email: jijh@pmo.ac.cn College of Physics and Electronic Engineering, Taishan University, Taian 271000, China email: yxgong@pmo.ac.cn
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Abstract

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In this work, we proposed a possible mechanism for the formation S-type planet in close binaries (0.5 au < aB < 3 au). Numerical simulations showed that the maximum capture probability is ∼ 10%, which can be comparable to the tidal capture probability of hot Jupiters in single star systems. The capture probability is related to binary configurations. Furthermore, we find that S-type planets with retrograde orbits can be naturally produced via capture process. These planets on retrograde orbits can help us distinguish in situ formation and post-capture origin for S-type planet in close binaries. The forthcoming missions (PLATO or TESS) will provide the opportunity and feasibility to detect such planets.

Keywords

binaries (including multiple): closeplanetary systems: formationmethods: n-body simulations
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 269 - 270
Copyright
© International Astronomical Union 2020 

References

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