Evolution and Photoevaporation of Protoplanetary Disks in Clusters: The Role of Pre-stellar Core Properties
Xiao, Lin1,2; Chang, Qiang1
发表期刊ASTROPHYSICAL JOURNAL
2018-01-20
卷号853期号:1
DOI10.3847/1538-4357/aa9ff1
收录类别SCI
关键词Protoplanetary Disks Stars: Formation Stars: Pre-main Sequence Accretion Accretion Disks
摘要

We explore the effects of progenitor pre-stellar core properties on the evolution of disks with external photoevaporation in clusters. Since the strength of external photoevaporation is largely determined by the depth of the gravitational potential well of the disk, the external photoevaporation rate is the function of star mass and disk size. The properties of a core collapse set up the initial conditions of protoplanetary disks, so they influence the evolutions of star mass and disk size. Our calculations show that the core properties can dramatically influence the efficiency of external photoevaporation. For the core with low angular velocity, most core mass directly falls onto the central star or onto the disk near the star. External photoevaporation is suppressed even if external radiation from nearby massive stars are strong. In this case, the disk evolution in clusters is primarily driven by its own internal viscosity. However, if the core angular velocity is high, most core mass falls onto the disk far from the central star. External photoevaporation is so strong that the disk mass is severely evaporated. Finally, the star mass is very low and the disk lifetime is very short. Our calculations could interpret some observational features of disks in clusters, such as the diameter distribution of disks in the Trapezium cluster and the correlation between mass accretion rate and star mass. We suggest that the disk mass determined by (sub) millimeter wavelength observations may be underestimated.

资助项目National Natural Science Foundation of China (NSFC)[11703075] ; National Natural Science Foundation of China (NSFC)[11673054] ; West Light Foundation of CAS[2017-QNXZ-B] ; Xinjiang Tianchi Bairen project ; Key Laboratory for the Structure and Evolution of Celestial Objects of CAS[OP201711]
项目资助者National Natural Science Foundation of China (NSFC)[11703075, 11673054] ; West Light Foundation of CAS[2017-QNXZ-B] ; Xinjiang Tianchi Bairen project ; Key Laboratory for the Structure and Evolution of Celestial Objects of CAS[OP201711]
语种英语
学科领域天文学 ; 恒星与银河系
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000423090600008
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ANGULAR-MOMENTUM TRANSPORT ; CIRCUMSTELLAR DUST DISKS ; ORION NEBULA CLUSTER ; T TAURI DISKS ; ACCRETION DISKS ; PROTOSTELLAR DISKS ; SOLAR NEBULA ; STAR-FORMATION ; LAYERED ACCRETION ; DENSE CORES
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12283
专题中国科学院天体结构与演化重点实验室
通讯作者Xiao, Lin
作者单位1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi 830011, People's Republic of China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
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Xiao, Lin,Chang, Qiang. Evolution and Photoevaporation of Protoplanetary Disks in Clusters: The Role of Pre-stellar Core Properties[J]. ASTROPHYSICAL JOURNAL,2018,853(1).
APA Xiao, Lin,&Chang, Qiang.(2018).Evolution and Photoevaporation of Protoplanetary Disks in Clusters: The Role of Pre-stellar Core Properties.ASTROPHYSICAL JOURNAL,853(1).
MLA Xiao, Lin,et al."Evolution and Photoevaporation of Protoplanetary Disks in Clusters: The Role of Pre-stellar Core Properties".ASTROPHYSICAL JOURNAL 853.1(2018).
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