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FORMATION OF ISOTHERMAL DISKS AROUND PROTOPLANETS. I. INTRODUCTORY THREE-DIMENSIONAL GLOBAL SIMULATIONS FOR SUB-NEPTUNE-MASS PROTOPLANETS
Wang, Hsiang-Hsu1; Bu, Defu2,3; Shang, Hsien1; Gu, Pin-Gao1
2014-07-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume790Issue:1Pages:9
Corresponding AuthorWang, Hsiang-Hsu(hhwang@asiaa.sinica.edu.tw)
AbstractThe regular satellites found around Neptune (approximate to 17 M-circle plus) and Uranus (approximate to 14.5 M-circle plus) suggest that past gaseous circumplanetary disks may have co-existed with solids around sub-Neptune-mass protoplanets (< 17 M-circle plus). These disks have been shown to be cool, optically thin, and quiescent, with low surface densities and low viscosities. Numerical studies of the formation are difficult and technically challenging. As an introductory attempt, three-dimensional global simulations are performed to explore the formation of circumplanetary disks around sub-Neptune-mass protoplanets embedded within an isothermal protoplanetary disk at the inviscid limit of the fluid in the absence of self-gravity. Under such conditions, a sub-Neptune-mass protoplanet can reasonably have a rotationally supported circumplanetary disk. The size of the circumplanetary disk is found to be roughly one-tenth of the corresponding Hill radius, which is consistent with the orbital radii of irregular satellites found for Uranus. The protoplanetary gas accretes onto the circumplanetary disk vertically from high altitude and returns to the protoplanetary disk again near the midplane. This implies an open system in which the circumplanetary disk constantly exchanges angular momentum and material with its surrounding prenatal protoplanetary gas.
Keywordhydrodynamics methods: numerical planets and satellites: formation
DOI10.1088/0004-637X/790/1/32
WOS KeywordGAS GIANT PLANET ; CIRCUMPLANETARY DISC ; REGULAR SATELLITES ; ANGULAR-MOMENTUM ; ACCRETION ; MIGRATION ; MODELS ; JUPITER ; URANUS ; GROWTH
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000338836800032
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22043
Collection中国科学院紫金山天文台
Corresponding AuthorWang, Hsiang-Hsu
Affiliation1.Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan
2.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
3.Chinese Acad Sci, Key Lab Planetary Sci, Shanghai 200030, Peoples R China
Recommended Citation
GB/T 7714
Wang, Hsiang-Hsu,Bu, Defu,Shang, Hsien,et al. FORMATION OF ISOTHERMAL DISKS AROUND PROTOPLANETS. I. INTRODUCTORY THREE-DIMENSIONAL GLOBAL SIMULATIONS FOR SUB-NEPTUNE-MASS PROTOPLANETS[J]. ASTROPHYSICAL JOURNAL,2014,790(1):9.
APA Wang, Hsiang-Hsu,Bu, Defu,Shang, Hsien,&Gu, Pin-Gao.(2014).FORMATION OF ISOTHERMAL DISKS AROUND PROTOPLANETS. I. INTRODUCTORY THREE-DIMENSIONAL GLOBAL SIMULATIONS FOR SUB-NEPTUNE-MASS PROTOPLANETS.ASTROPHYSICAL JOURNAL,790(1),9.
MLA Wang, Hsiang-Hsu,et al."FORMATION OF ISOTHERMAL DISKS AROUND PROTOPLANETS. I. INTRODUCTORY THREE-DIMENSIONAL GLOBAL SIMULATIONS FOR SUB-NEPTUNE-MASS PROTOPLANETS".ASTROPHYSICAL JOURNAL 790.1(2014):9.
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