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PLANETARY POPULATION SYNTHESIS COUPLED WITH ATMOSPHERIC ESCAPE: A STATISTICAL VIEW OF EVAPORATION
Jin, Sheng1,2,3; Mordasini, Christoph2; Parmentier, Vivien4; van Boekel, Roy2; Henning, Thomas2; Ji, Jianghui1,5
2014-11-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume795Issue:1Pages:65
AbstractWe apply hydrodynamic evaporation models to different synthetic planet populations that were obtained from a planet formation code based on the core-accretion paradigm. We investigated the evolution of the planet populations using several evaporation models, which are distinguished by the driving force of the escape flow (X-ray or EUV), the heating efficiency in energy-limited evaporation regimes, or both. Although the mass distribution of the planet populations is barely affected by evaporation, the radius distribution clearly shows a break at approximately 2R(circle plus). We find that evaporation can lead to a bimodal distribution of planetary sizes and to an "evaporation valley" running diagonally downward in the orbital distance-planetary radius plane, separating bare cores from low-mass planets that have kept some primordial H/He. Furthermore, this bimodal distribution is related to the initial characteristics of the planetary populations because low-mass planetary cores can only accrete small primordial H/He envelopes and their envelope masses are proportional to their core masses. We also find that the population-wide effect of evaporation is not sensitive to the heating efficiency of energy-limited description. However, in two extreme cases, namely without evaporation or with a 100% heating efficiency in an evaporation model, the final size distributions show significant differences; these two scenarios can be ruled out from the size distribution of Kepler candidates.
KeywordPlanets And Satellites: Atmospheres Planets And Satellites: Interiors Planets And Satellites: Physical Evolution
Subject Area天文和天体物理
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/795/1/65
WOS KeywordEARTH-LIKE PLANETS ; SUN-LIKE STARS ; HOT JUPITERS ; SUPER-EARTHS ; GIANT PLANETS ; MASS-LOSS ; X-RAY ; EXTRASOLAR PLANETS ; HD 209458B ; IRRADIATED ATMOSPHERES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000343857300065
Citation statistics
Cited Times:70[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/11568
Collection行星科学与深空探测实验室
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Max Planck Inst Astron, D-69117 Heidelberg, Germany
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Univ Nice Sophia Antipolis, CNRS, Observ Cote Azur, Lab Lagrange,UMR7293, F-06300 Nice, France
5.Chinese Acad Sci, Key Lab Planetary Sci, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Jin, Sheng,Mordasini, Christoph,Parmentier, Vivien,et al. PLANETARY POPULATION SYNTHESIS COUPLED WITH ATMOSPHERIC ESCAPE: A STATISTICAL VIEW OF EVAPORATION[J]. ASTROPHYSICAL JOURNAL,2014,795(1):65.
APA Jin, Sheng,Mordasini, Christoph,Parmentier, Vivien,van Boekel, Roy,Henning, Thomas,&Ji, Jianghui.(2014).PLANETARY POPULATION SYNTHESIS COUPLED WITH ATMOSPHERIC ESCAPE: A STATISTICAL VIEW OF EVAPORATION.ASTROPHYSICAL JOURNAL,795(1),65.
MLA Jin, Sheng,et al."PLANETARY POPULATION SYNTHESIS COUPLED WITH ATMOSPHERIC ESCAPE: A STATISTICAL VIEW OF EVAPORATION".ASTROPHYSICAL JOURNAL 795.1(2014):65.
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