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FORMING CLOSE-IN EARTH-LIKE PLANETS VIA A COLLISION-MERGER MECHANISM IN LATE-STAGE PLANET FORMATION
Ji, Jianghui1,2; Jin, Sheng1,3; Tinney, C. G.2
2011-01-20
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume727Issue:1Pages:L5(4pp)
AbstractThe large number of exoplanets found to orbit their host stars in very close orbits have significantly advanced our understanding of the planetary formation process. It is now widely accepted that such short-period planets cannot have formed in situ, but rather must have migrated to their current orbits from a formation location much farther from their host star. In the late stages of planetary formation, once the gas in the protoplanetary disk has dissipated and migration has halted, gas giants orbiting in the inner disk regions will excite planetesimals and planetary embryos, resulting in an increased rate of orbital crossings and large impacts. We present the results of dynamical simulations for planetesimal evolution in this later stage of planet formation. We find that a mechanism is revealed by which the collision-merger of planetary embryos can kick terrestrial planets directly into orbits extremely close to their parent stars.
KeywordCelestial Mechanics Methods: Numerical Planets And Satellites: Formation Stars: Individual (Ogle-06-109l, 47 Ursae Majoris)
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/727/1/L5
WOS KeywordEXTRA-SOLAR PLANETS ; HOT SUPER-EARTHS ; 47 URSAE-MAJORIS ; M-CIRCLE-PLUS ; TERRESTRIAL PLANETS ; HARPS SEARCH ; MASS ; MIGRATION ; SYSTEMS ; SIMULATIONS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000285993800005
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/4511
Collection太阳活动的多波段观测研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Univ New S Wales, Dept Astrophys, Sch Phys, Sydney, NSW 2052, Australia
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ji, Jianghui,Jin, Sheng,Tinney, C. G.. FORMING CLOSE-IN EARTH-LIKE PLANETS VIA A COLLISION-MERGER MECHANISM IN LATE-STAGE PLANET FORMATION[J]. ASTROPHYSICAL JOURNAL LETTERS,2011,727(1):L5(4pp).
APA Ji, Jianghui,Jin, Sheng,&Tinney, C. G..(2011).FORMING CLOSE-IN EARTH-LIKE PLANETS VIA A COLLISION-MERGER MECHANISM IN LATE-STAGE PLANET FORMATION.ASTROPHYSICAL JOURNAL LETTERS,727(1),L5(4pp).
MLA Ji, Jianghui,et al."FORMING CLOSE-IN EARTH-LIKE PLANETS VIA A COLLISION-MERGER MECHANISM IN LATE-STAGE PLANET FORMATION".ASTROPHYSICAL JOURNAL LETTERS 727.1(2011):L5(4pp).
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