Migration and Survival of Exoplanets near Magnetized Young Stars
磁化年轻恒星附近系外行星的迁移和生存
基本信息
- 批准号:2009820
- 负责人:
- 金额:$ 31.58万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2020
- 资助国家:美国
- 起止时间:2020-08-01 至 2024-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
A research investigation conducted by a team from Cornell University will simulate the orbital migration of planets under the influence of a host star's magnetic field. Observations present an important problem: large, gaseous planets that are thought to form far from their host stars are often found to orbit very close to their host stars. It is thought that after forming, gas planets migrate towards their host stars by losing angular momentum to friction within a disk of gas and dust. However, it is not understood why these planets do not fall into the star. An important problem in the science of planets today is understanding how they survive in such close proximity to their host stars. This team will investigate through supercomputer simulations what role the stellar magnetic field plays in the survival and orbital distribution of planets. They will also develop a new tabletop astronomy exhibit at the local Sciencenter. The Exhibit will educate the public about the properties of magnets and the magnetic fields of the Earth and Sun, and it will prepare them for the total Solar eclipse of 2024, which will be visible near Ithaca, NY. One graduate student will be actively involved in the modeling of planetary orbits and in explaining science to the public at the Sciencenter. Migration of planets in the vicinity of rotating magnetized stars will be studied in global numerical simulations. The investigation will advance understanding of the role that young magnetized stars play in the migration and survival of exoplanets. Specifically, they will (1) investigate the migration and survival of planets inside magnetospheric cavities, taking into account their interaction with the inner disk; (2) investigate migration and trapping of low-mass planets at disk-cavity boundaries due to corotation torque, and (3) study whether interactions of exoplanets with waves in their inner disks can change eccentricities and inclinations of their orbits. The investigation will use three-dimensional magneto-hydrodynamic codes: the first a code in cylindrical coordinates, which incorporates mesh refinement, and secondly the Cubed Sphere code, which has been used extensively in the past for modeling accretion onto magnetized stars. Both codes include a planetary module that calculates the orbits of planets.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
康奈尔大学的一个研究小组进行的一项研究调查将模拟行星在宿主星星磁场影响下的轨道迁移。观测提出了一个重要的问题:那些被认为是在远离其宿主恒星的地方形成的大型气态行星,往往被发现轨道非常靠近其宿主恒星。人们认为,气体行星形成后,通过在气体和尘埃盘内的摩擦失去角动量,向它们的宿主恒星迁移。但是,人们还不明白为什么这些行星不会落入星星。当今行星科学的一个重要问题是了解它们如何在如此接近其宿主恒星的情况下生存。该团队将通过超级计算机模拟研究恒星磁场在行星的生存和轨道分布中扮演的角色。 他们还将在当地的科学中心开发一个新的桌面天文学展览。 该展览将教育公众关于磁铁的性质以及地球和太阳的磁场,并将为2024年的日全食做好准备,日全食将在纽约州伊萨卡附近可见。一名研究生将积极参与行星轨道的建模,并在科学中心向公众解释科学。将在全球数值模拟中研究行星在旋转磁化恒星附近的迁移。这项研究将促进对年轻磁化恒星在系外行星迁移和生存中所起作用的理解。具体而言,他们将(1)研究磁层空腔内行星的迁移和生存,考虑到它们与内盘的相互作用;(2)研究由于共转扭矩导致的低质量行星在盘-空腔边界的迁移和捕获,以及(3)研究系外行星与内盘波的相互作用是否会改变其轨道的偏心率和倾角。调查将使用三维磁流体动力学代码:第一个代码在圆柱坐标,其中包括网格细化,其次是立方体球代码,这在过去已被广泛用于模拟吸积到磁化恒星。这两个代码都包括一个行星模块,用于计算行星的轨道。该奖项反映了NSF的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Eccentricity growth of massive planets inside cavities of protoplanetary discs
原行星盘空腔内大质量行星的偏心率增长
- DOI:10.1093/mnras/stad987
- 发表时间:2023
- 期刊:
- 影响因子:4.8
- 作者:Romanova, M. M.;Koldoba, A. V.;Ustyugova, G. V.;Lai, D.;Lovelace, R. V. E.
- 通讯作者:Lovelace, R. V. E.
Laboratory modelling of equatorial ‘tongue’ accretion channels in young stellar objects caused by the Rayleigh-Taylor instability
由瑞利-泰勒不稳定性引起的年轻恒星中赤道“舌头”吸积通道的实验室模型
- DOI:10.1051/0004-6361/202140997
- 发表时间:2022
- 期刊:
- 影响因子:6.5
- 作者:Burdonov, K.;Yao, W.;Sladkov, A.;Bonito, R.;Chen, S.N.;Ciardi, A.;Korzhimanov, A.;Soloviev, A.;Starodubtsev, M.;Zemskov, R.
- 通讯作者:Zemskov, R.
Density streams in the disc winds of Classical T Tauri stars
经典金牛座 T 星盘风中的密度流
- DOI:10.1093/mnras/stad2252
- 发表时间:2023
- 期刊:
- 影响因子:4.8
- 作者:Petrov, P. P.;Grankin, K. N.;Babina, E. V.;Artemenko, S. A.;Romanova, M. M.;Gorda, S. Yu;Djupvik, A. A.;Gameiro, J. F.
- 通讯作者:Gameiro, J. F.
Modulated accretion in the T Tauri star RY Tau – a stable MHD propeller or a planet at 0.2 au?
- DOI:10.1093/mnras/stab904
- 发表时间:2021-04
- 期刊:
- 影响因子:0
- 作者:P. Petrov;M. Romanova;K. Grankin;S. Artemenko;E. Babina;S. Gorda
- 通讯作者:P. Petrov;M. Romanova;K. Grankin;S. Artemenko;E. Babina;S. Gorda
3D MHD simulations of accretion on to stars with tilted magnetic and rotational axes
具有倾斜磁轴和旋转轴的恒星吸积的 3D MHD 模拟
- DOI:10.1093/mnras/stab1724
- 发表时间:2021
- 期刊:
- 影响因子:4.8
- 作者:Romanova, M M;Koldoba, A V;Ustyugova, G V;Blinova, A A;Lai, D;Lovelace, R V
- 通讯作者:Lovelace, R V
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Marina Romanova其他文献
Anticytokine therapy alleviates oxidative stress and attenuates left ventricular remodeling in experimental heart failure
- DOI:
10.1016/s0735-1097(02)80779-3 - 发表时间:
2002-03-06 - 期刊:
- 影响因子:
- 作者:
Gordon W. Moe;Andrea Konig;Marina Romanova;Peter Liu - 通讯作者:
Peter Liu
Marina Romanova的其他文献
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{{ truncateString('Marina Romanova', 18)}}的其他基金
Launching and Collimation of Outflows from Young Solar-type Stars
年轻太阳型恒星流出物的发射和准直
- 批准号:
1211318 - 财政年份:2012
- 资助金额:
$ 31.58万 - 项目类别:
Standard Grant
Variability of Accreting Magnetized Stars Studied with 3D MHD Simulations and 3D Radiative Transfer
通过 3D MHD 模拟和 3D 辐射传输研究吸积磁化恒星的变化
- 批准号:
0807129 - 财政年份:2008
- 资助金额:
$ 31.58万 - 项目类别:
Continuing Grant
Variability of Accreting Magnetized Stars
吸积磁化恒星的变化
- 批准号:
0507760 - 财政年份:2005
- 资助金额:
$ 31.58万 - 项目类别:
Standard Grant
POWRE: Accretion to Rotating Magnetized Stars
POWRE:旋转磁化恒星的吸积
- 批准号:
9973366 - 财政年份:1999
- 资助金额:
$ 31.58万 - 项目类别:
Standard Grant
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