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On the survivability of planets in young massive clusters and its implication of planet orbital architectures in globular clusters

文献类型：期刊论文

作者Cai, Maxwell X.1; Zwart, S. Portegies1; Kouwenhoven, M. B. N.2; Spurzem, Rainer3,4,5,6
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2019-11-01
卷号489期号:3页码:4311-4321
ISSN号0035-8711
关键词methods: numerical planets and satellites: dynamical evolution and stability planets and satellites: formation globular clusters: general galaxies: star clusters: general
DOI10.1093/mnras/stz2467
英文摘要As of 2019 August, among the more than 4000 confirmed exoplanets, only one has been detected in a globular cluster (GC) M4. The scarce of exoplanet detections motivates us to employ direct N-body simulations to investigate the dynamical stability of planets in young massive clusters (YMC), which are potentially the progenitors of GCs. In an N = 128 k cluster of virial radius 1.7 pc (comparable to Westerlund-1), our simulations show that most wide-orbit planets (a >= 20 au) will be ejected within a time-scale of 10 Myr. Interestingly, more than 70 per cent of planets with a < 5 au survive in the 100 Myr simulations. Ignoring planet-planet scattering and tidal damping, the survivability at t Myr as a function of initial semimajor axis a(0) in au in such a YMC can be described as f(surv)(a(0, t))= -0.33log(10)(a(0))(1 - e(-0.0482t)) + 1. Upon ejection, about 28.8 per cent of free-floating planets (FFPs) have sufficient speeds to escape from the host cluster at a crossing time-scale. The other FFPs will remain bound to the cluster potential, but the subsequent dynamical evolution of the stellar system can result in the delayed ejection of FFPs from the host cluster. Although a full investigation of planet population in GCs requires extending the simulations to multiGyr, our results suggest that wide-orbit planets and free-floating planets are unlikely to be found in GCs.
WOS关键词FREE-FLOATING PLANETS ; STELLAR CLUSTERS ; EXTERNAL PHOTOEVAPORATION ; DYNAMICAL INTERACTIONS ; EMBEDDED CLUSTERS ; CLOSE ENCOUNTERS ; GAS EXPULSION ; SYSTEMS ; EVOLUTION ; ENGULFMENT
资助项目SURFsara (Dutch national supercomputing centre) through the SOIL (SURFsara Open Innovation Lab) initiative ; EU Horizon 2020 project COMPAT[671564] ; NWO[621.016.701] ; National Natural Science Foundation of China[11573004] ; Xi'an Jiaotong-Liverpool University (XJTLU)[RDF-16-01-16] ; DFG (German Research Foundation)[SPP 1992] ; DFG (German Research Foundation)[Sp 345/20-1]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000489288600101
资助机构SURFsara (Dutch national supercomputing centre) through the SOIL (SURFsara Open Innovation Lab) initiative ; SURFsara (Dutch national supercomputing centre) through the SOIL (SURFsara Open Innovation Lab) initiative ; EU Horizon 2020 project COMPAT ; EU Horizon 2020 project COMPAT ; NWO ; NWO ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Xi'an Jiaotong-Liverpool University (XJTLU) ; Xi'an Jiaotong-Liverpool University (XJTLU) ; DFG (German Research Foundation) ; DFG (German Research Foundation) ; SURFsara (Dutch national supercomputing centre) through the SOIL (SURFsara Open Innovation Lab) initiative ; SURFsara (Dutch national supercomputing centre) through the SOIL (SURFsara Open Innovation Lab) initiative ; EU Horizon 2020 project COMPAT ; EU Horizon 2020 project COMPAT ; NWO ; NWO ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Xi'an Jiaotong-Liverpool University (XJTLU) ; Xi'an Jiaotong-Liverpool University (XJTLU) ; DFG (German Research Foundation) ; DFG (German Research Foundation) ; SURFsara (Dutch national supercomputing centre) through the SOIL (SURFsara Open Innovation Lab) initiative ; SURFsara (Dutch national supercomputing centre) through the SOIL (SURFsara Open Innovation Lab) initiative ; EU Horizon 2020 project COMPAT ; EU Horizon 2020 project COMPAT ; NWO ; NWO ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Xi'an Jiaotong-Liverpool University (XJTLU) ; Xi'an Jiaotong-Liverpool University (XJTLU) ; DFG (German Research Foundation) ; DFG (German Research Foundation) ; SURFsara (Dutch national supercomputing centre) through the SOIL (SURFsara Open Innovation Lab) initiative ; SURFsara (Dutch national supercomputing centre) through the SOIL (SURFsara Open Innovation Lab) initiative ; EU Horizon 2020 project COMPAT ; EU Horizon 2020 project COMPAT ; NWO ; NWO ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Xi'an Jiaotong-Liverpool University (XJTLU) ; Xi'an Jiaotong-Liverpool University (XJTLU) ; DFG (German Research Foundation) ; DFG (German Research Foundation)
源URL[http://ir.bao.ac.cn/handle/114a11/28060]  
专题中国科学院国家天文台
通讯作者Cai, Maxwell X.; Zwart, S. Portegies
作者单位1.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands
2.Xian Jiaotong Liverpool Univ, Dept Mat Sci, 111 Renai Rd,Suzhou Ind Pk, Suzhou 215123, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China
4.Chinese Acad Sci, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100012, Peoples R China
5.Peking Univ, Kavli Inst Astron & Astrophys, 5 Yi He Yuan Rd, Beijing 100871, Peoples R China
6.Heidelberg Univ, Astron Rechen Inst, Zentrum Astron, Monchhofstr 12-14, D-69120 Heidelberg, Germany
推荐引用方式
GB/T 7714		 Cai, Maxwell X.,Zwart, S. Portegies,Kouwenhoven, M. B. N.,et al. On the survivability of planets in young massive clusters and its implication of planet orbital architectures in globular clusters[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,489(3):4311-4321.
APA Cai, Maxwell X.,Zwart, S. Portegies,Kouwenhoven, M. B. N.,&Spurzem, Rainer.(2019).On the survivability of planets in young massive clusters and its implication of planet orbital architectures in globular clusters.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,489(3),4311-4321.
MLA Cai, Maxwell X.,et al."On the survivability of planets in young massive clusters and its implication of planet orbital architectures in globular clusters".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 489.3(2019):4311-4321.

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