The newborn planet population emerging from ring-like structures in discs
文献类型：期刊论文
| 作者 | Lodato, Giuseppe1; Dipierro, Giovanni2; Ragusa, Enrico1,2; Long, Feng3; Herczeg, Gregory J.3; Pascucci, Ilaria4,5; Pinilla, Paola6; Manara, Carlo F.7; Tazzari, Marco8; Liu, Yao9,10,11
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2019-06-01 |
| 卷号 | 486期号:1页码:453-461 |
| ISSN号 | 0035-8711 |
| 关键词 | accretion, accretion discs planets and satellites: formation protoplanetary discs |
| DOI | 10.1093/mnras/stz913 |
| 通讯作者 | Lodato, Giuseppe(giuseppe.lodato@unimi.it) |
| 英文摘要 | ALMA has observed a plethora of ring-like structures in planet-forming discs at distances of 10-100 au from their host star. Although several mechanisms have been invoked to explain the origin of such rings, a common explanation is that they trace new-born planets. Under the planetary hypothesis, a natural question is how to reconcile the apparently high frequency of gap-carving planets at 10-100 au with the paucity of Jupiter-mass planets observed around main-sequence stars at those separations. Here, we provide an analysis of the new-born planet population emerging from observations of gaps in discs, under the assumption that the observed gaps are due to planets. We use a simple estimate of the planet mass based on the gap morphology, and apply it to a sample of gaps recently obtained by us in a survey of Taurus with ALMA. We also include additional data from recent published surveys, thus analysing the largest gap sample to date, for a total of 48 gaps. The properties of the purported planets occupy a distinctively different region of parameter space with respect to the known exo-planet population, currently not accessible through planet finding methods. Thus, no discrepancy in the mass and radius distribution of the two populations can be claimed at this stage. We show that the mass of the inferred planets conforms to the theoretically expected trend for the minimum planet mass needed to carve a dust gap. Finally, we estimate the separation and mass of the putative planets after accounting for migration and accretion, for a range of evolutionary times, finding a good match with the distribution of cold Jupiters. |
| WOS关键词 | T-TAURI STARS ; GAS ACCRETION ; GAPS ; MASS ; MIGRATION |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000474894100037 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/27395]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Lodato, Giuseppe |
| 作者单位 | 1.Univ Milan, Dipartimento Fis, Via Celoria 16, I-20133 Milan, Italy 2.Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England 3.Peking Univ, Kavli Inst Astron & Astrophys, Yiheyuan 5, Beijing 100871, Peoples R China 4.Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA 5.NASA, Earths Other Solar Syst Team, Nexus Exoplanet Syst Sci, Washington, DC 20546 USA 6.Univ Arizona, Steward Observ, Dept Astron, 933 North Cherry Ave, Tucson, AZ 85721 USA 7.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany 8.Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England 9.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany 10.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lodato, Giuseppe,Dipierro, Giovanni,Ragusa, Enrico,et al. The newborn planet population emerging from ring-like structures in discs[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,486(1):453-461. |
| APA | Lodato, Giuseppe.,Dipierro, Giovanni.,Ragusa, Enrico.,Long, Feng.,Herczeg, Gregory J..,...&Gully-Santiago, Michael.(2019).The newborn planet population emerging from ring-like structures in discs.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,486(1),453-461. |
| MLA | Lodato, Giuseppe,et al."The newborn planet population emerging from ring-like structures in discs".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 486.1(2019):453-461. |
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来源：紫金山天文台
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