Photoevaporation of protoplanetary gas discs due to flybys of external single stars in different orbits

doi:10.1093/mnras/sty2142

CORC > 国家天文台 > 中国科学院国家天文台

	Photoevaporation of protoplanetary gas discs due to flybys of external single stars in different orbits
	Dai, Yuan-Zhe 2; Liu, Hui-Gen 2; Wu, Wen-Bo 1; Xie, Ji-Wei 2; Yang, Ming 2; Zhang, Hui 2; Zhou, Ji-Lin 2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2018-11-01
卷号	480 期号:3 页码:4080-4098
关键词	planets and satellites: gaseous planets protoplanetary discs photodissociation region (PDR) globular clusters: general open clusters and associations: general ultraviolet: stars
ISSN号	0035-8711
DOI	10.1093/mnras/sty2142
英文摘要	During the evolution of protoplanetary disc, photoevaporations of both central and external stars play important roles. Considering the complicated radiation surroundings in the clusters, where the star formed, the protoplanetary discs survive in different lifetimes due to flyby events. In this paper, we mainly focus on the disc around a T Tauri star, which encounters with another main-sequence star with different temperatures in hyperbolic orbits with different pericentre distances, eccentricities, and inclinations. We find the criterion for gap opening due to photoevaporation of central star after the flyby event. A gap is opened in the late stage of gas disc, and induces that the gap only influence the planet formation and migration limitedly. If the flyby orbit has a moderate value of pericentre distance, which weakly depends on the eccentricity and inclination, the external photoevaporation lead to a maximum mass loss during the flyby event. Flyby stars in orbits with smaller eccentricities or larger inclinations induce larger mass loss. Adopting a simple multiple flyby models, we conclude that in open clusters, gas discs usually survive in typical lifetimes between 1 and 10 Myr, except there are many massive stars in dense open clusters. In globular clusters, discs disperse very quickly and hardly produce the gas giant planets. The fast-depleted discs are probably responsible for the null detection of giant planets in globular clusters.
资助项目	National Natural Science Foundation of China[11503009] ; Fundamental Research Funds for the Central Universities[14380016] ; Fundamental Research Funds for the Central Universities[14380018] ; NSFC[11333002] ; NSFC[11673011] ; Key Development Program of Basic Research of China[2013CB834900]
WOS关键词	YOUNG STELLAR CLUSTERS ; ORION NEBULA CLUSTER ; PLANETARY SYSTEMS ; X-RAY ; HYDRODYNAMIC MODELS ; SPACE-TELESCOPE ; 47 TUCANAE ; DISKS ; EVOLUTION ; SEARCH
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000449616200096
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; NSFC ; NSFC ; Key Development Program of Basic Research of China ; Key Development Program of Basic Research of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; NSFC ; NSFC ; Key Development Program of Basic Research of China ; Key Development Program of Basic Research of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; NSFC ; NSFC ; Key Development Program of Basic Research of China ; Key Development Program of Basic Research of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; NSFC ; NSFC ; Key Development Program of Basic Research of China ; Key Development Program of Basic Research of China
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/23339]
专题	中国科学院国家天文台
通讯作者	Dai, Yuan-Zhe; Liu, Hui-Gen; Wu, Wen-Bo
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, 20A Datun Rd, Beijing 100012, Peoples R China 2.Nanjing Univ, Sch Astron & Space Sci, 163 Xianlin Ave, Nanjing 210046, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Dai, Yuan-Zhe,Liu, Hui-Gen,Wu, Wen-Bo,et al. Photoevaporation of protoplanetary gas discs due to flybys of external single stars in different orbits[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,480(3):4080-4098.
APA	Dai, Yuan-Zhe.,Liu, Hui-Gen.,Wu, Wen-Bo.,Xie, Ji-Wei.,Yang, Ming.,...&Zhou, Ji-Lin.(2018).Photoevaporation of protoplanetary gas discs due to flybys of external single stars in different orbits.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,480(3),4080-4098.
MLA	Dai, Yuan-Zhe,et al."Photoevaporation of protoplanetary gas discs due to flybys of external single stars in different orbits".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 480.3(2018):4080-4098.