Ring structure in the MWC 480 disk revealed by ALMA
文献类型：期刊论文
| 作者 | Liu, Yao1,2,3 ; Dipierro, Giovanni4; Ragusa, Enrico5; Lodato, Giuseppe5; Herczeg, Gregory J.6; Long, Feng6; Harsono, Daniel7; Boehler, Yann8,9; Menard, Francois9; Johnstone, Doug10,11
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2019-01-29 |
| 卷号 | 622页码:11 |
| ISSN号 | 1432-0746 |
| 关键词 | protoplanetary disks planet-disk interactions radiative transfer stars: formation stars: individual: MWC 480 |
| DOI | 10.1051/0004-6361/201834157 |
| 通讯作者 | Liu, Yao(yliu@pmo.ac.cn) |
| 英文摘要 | Gap-like structures in protoplanetary disks are likely related to planet formation processes. In this paper, we present and analyze high-resolution (0.17 '' x 0.11 '') 1.3 mm ALMA continuum observations of the protoplanetary disk around the Herbig Ae star MWC480. Our observations show for the first time a gap centered at similar to 74 au with a width of similar to 23 au, surrounded by a bright ring centered at similar to 98 au from the central star. Detailed radiative transfer modeling of the ALMA image and the broadband spectral energy distribution is used to constrain the surface density profile and structural parameters of the disk. If the width of the gap corresponds to 4-8 times the Hill radius of a single forming planet, then the putative planet would have a mass of 0.4-3 M-J. We test this prediction by performing global three-dimensional smoothed particle hydrodynamic gas/dust simulations of disks hosting a migrating and accreting planet. We find that the dust emission across the disk is consistent with the presence of an embedded planet with a mass of similar to 2.3 M-J at an orbital radius of similar to 78 au. Given the surface density of the best-fit radiative transfer model, the amount of depleted mass in the gap is higher than the mass of the putative planet, which satisfies the basic condition for the formation of such a planet. |
| WOS关键词 | PRE-MAIN-SEQUENCE ; T-TAURI-STARS ; HERBIG AE/BE STARS ; PROTOPLANETARY DISKS ; CIRCUMSTELLAR DISKS ; PLANET FORMATION ; ACCRETION DISKS ; MHD SIMULATIONS ; HIGH-RESOLUTION ; YOUNG OBJECTS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | EDP SCIENCES S A |
| WOS记录号 | WOS:000456971400001 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/19210]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Liu, Yao |
| 作者单位 | 1.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany 2.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Peoples R China 4.Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England 5.Univ Milan, Dipartimento Fis, Via Celoria 16, I-20133 Milan, Italy 6.Peking Univ, Kavli Inst Astron & Astrophys, Yiheyuan 5, Beijing 100871, Peoples R China 7.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands 8.Rice Univ, Dept Phys & Astron, Main St, Houston, TX 77005 USA 9.Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France 10.NRC Herzberg Astron & Astrophys, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada |
| 推荐引用方式 GB/T 7714 | Liu, Yao,Dipierro, Giovanni,Ragusa, Enrico,et al. Ring structure in the MWC 480 disk revealed by ALMA[J]. ASTRONOMY & ASTROPHYSICS,2019,622:11. |
| APA | Liu, Yao.,Dipierro, Giovanni.,Ragusa, Enrico.,Lodato, Giuseppe.,Herczeg, Gregory J..,...&Gully-Santiago, Michael.(2019).Ring structure in the MWC 480 disk revealed by ALMA.ASTRONOMY & ASTROPHYSICS,622,11. |
| MLA | Liu, Yao,et al."Ring structure in the MWC 480 disk revealed by ALMA".ASTRONOMY & ASTROPHYSICS 622(2019):11. |
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来源：紫金山天文台
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