PMO OpenIR  > 星系中的恒星形成研究团组
The internal structure models of Europa
Jin Sheng1,2; Ji JiangHui1
2012
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
ISSN1674-7348
Volume55Issue:1Pages:156-161
AbstractWe model the interior of Europa using a method by which we set three layers of Europa and the composition of each layer in advance. Comparing the calculated mass and radius related to each model with the data derived by the observations, we propose three possible internal structure models for Europa. All models are assumed to be differentiated into a metallic core, a (Mg,Fe)(2)SiO4 silicate mantle and an outer water shell. The only difference amongst these models are the composition of the core. The core of Model I is composed of Fe, while Model II composed of FeS, and the two models are based on the inferences provided by Europa's external gravitational field. Model III has a core which consists of Fe-FeS alloy, similar to that of Earth's outer core. Model I has a Fe core with a radius of 431 km, a (Mg,Fe)(2)SiO4 mantle with 999 km and a water shell with 132 km. Model II has a 777 km FeS core, a 619 km (Mg,Fe)(2)SiO4 mantle and a 167 km water shell. Model III has a 571 km Fe-0.8(FeS)(0.2) core, a 832 km (Mg,Fe)(2)SiO4 mantle and a 166 km water shell. In all three models, the density range and the radius of each layer is consistent with those deduced by Anderson et al.
KeywordEuropa Internal Structure Equation Of State
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s11433-011-4573-9
WOS KeywordPHYSICAL-PROPERTIES ; GALILEO ENCOUNTERS ; HIGH-PRESSURE ; CORE ; EARTH ; PLANETS ; RADIUS ; IRON ; TEMPERATURES ; CONSTRAINTS
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000298603400023
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8065
Collection星系中的恒星形成研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Jin Sheng,Ji JiangHui. The internal structure models of Europa[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2012,55(1):156-161.
APA Jin Sheng,&Ji JiangHui.(2012).The internal structure models of Europa.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,55(1),156-161.
MLA Jin Sheng,et al."The internal structure models of Europa".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 55.1(2012):156-161.
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