Evolution and Photoevaporation of Protoplanetary Disks in Clusters: The Role of Pre-stellar Core Properties
文献类型:期刊论文
作者 | Xiao, Lin1,2; Chang, Qiang1 |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2018-01-20 |
卷号 | 853期号:1 |
ISSN号 | 0004-637X |
关键词 | Protoplanetary Disks Stars: Formation Stars: Pre-main Sequence Accretion Accretion Disks |
DOI | 10.3847/1538-4357/aa9ff1 |
文献子类 | Article |
英文摘要 | 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. |
学科主题 | 天文学 ; 恒星与银河系 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
WOS关键词 | ANGULAR-MOMENTUM TRANSPORT ; CIRCUMSTELLAR DUST DISKS ; ORION NEBULA CLUSTER ; T TAURI DISKS ; ACCRETION DISKS ; PROTOSTELLAR DISKS ; SOLAR NEBULA ; STAR-FORMATION ; LAYERED ACCRETION ; DENSE CORES |
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] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000423090600008 |
资助机构 | 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] |
源URL | [http://ir.ynao.ac.cn/handle/114a53/12283] |
专题 | 云南天文台_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 |
推荐引用方式 GB/T 7714 | 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). |
入库方式: OAI收割
来源:云南天文台
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