Radiative Scale Height and Shadows in Protoplanetary Disks
文献类型：期刊论文
| 作者 | Montesinos,Matías4,5,6; Cuello,Nicolás6,7,8; Olofsson,Johan4,6; Cuadra,Jorge3,6; Bayo,Amelia4,6; Bertrang,Gesa H.-M.1; Perrot,Clément2,4,6 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 910期号:1 |
| 关键词 | Protoplanetary disks Hydrodynamical simulations Planetary-disk interactions Radiative transfer simulations |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/abe3fc |
| 英文摘要 | Abstract Planets form in young circumstellar disks called protoplanetary disks. However, it is still difficult to catch planet formation in situ. Nevertheless, from recent ALMA/SPHERE data, encouraging evidence of the direct and indirect presence of embedded planets has been identified in disks around young stars: co-moving point sources, gravitational perturbations, rings, cavities, and emission dips or shadows cast on disks. The interpretation of these observations needs a robust physical framework to deduce the complex disk geometry. In particular, protoplanetary disk models usually assume the gas pressure scale height given by the ratio of the sound speed over the azimuthal velocity H/r = c s /v k. By doing so, radiative pressure fields are often ignored, which could lead to a misinterpretation of the real vertical structure of such disks. We follow the evolution of a gaseous disk with an embedded Jupiter-mass planet through hydrodynamical simulations, computing the disk scale height including radiative pressure, which was derived from a generalization of the stellar atmosphere theory. We focus on the vertical impact of the radiative pressure in the vicinity of circumplanetary disks, where temperatures can reach ?1000 K for an accreting planet and radiative forces can overcome gravitational forces from the planet. The radiation pressure effects create a vertical, optically thick column of gas and dust at the protoplanet location, casting a shadow in scattered light. This mechanism could explain the peculiar illumination patterns observed in some disks around young stars such as HD 169142 where a moving shadow has been detected or the extremely high aspect ratio H/r ～ 0.2 observed in systems like AB Aur and CT Cha. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-910-1-ABE3FC |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/58115]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Max Planck Institute for Astronomy, K?nigstuhl 17, D-69117 Heidelberg, Germany 2.LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, F-92195 Meudon, France 3.Departamento de Ciencias, Facultad de Artes Liberales, Universidad Adolfo Ibá?ez, Av. Padre Hurtado 750, Vi?a del Mar, Chile 4.Instituto de Física y Astronomía, Universidad de Valparaíso, Chile; matias.montesinos@uv.cl 5.Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, CAS, Beijing 100012, People's Republic of China 6.Núcleo Milenio de Formación Planetaria (NPF), Chile 7.Université Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France 8.Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Santiago, Chile |
| 推荐引用方式 GB/T 7714 | Montesinos,Matías,Cuello,Nicolás,Olofsson,Johan,et al. Radiative Scale Height and Shadows in Protoplanetary Disks[J]. The Astrophysical Journal,2021,910(1). |
| APA | Montesinos,Matías.,Cuello,Nicolás.,Olofsson,Johan.,Cuadra,Jorge.,Bayo,Amelia.,...&Perrot,Clément.(2021).Radiative Scale Height and Shadows in Protoplanetary Disks.The Astrophysical Journal,910(1). |
| MLA | Montesinos,Matías,et al."Radiative Scale Height and Shadows in Protoplanetary Disks".The Astrophysical Journal 910.1(2021). |
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