Gas giant planet interactions with protoplanetary discs

气态巨行星与原行星盘的相互作用

• 批准号: 1794975
• 金额: --
• 依托单位: University of Leicester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1794975
• 关键词: Gas; giant; planet; interactions; protoplanetary

Planets form out of protoplanetary discs. While young and massive, these discs are expected to fragment on gas clumps of a few Jupiter masses. The clumps may eventually evolve into gas giants, smaller planets or massive brown dwarfs. Which one of these outcomes is realised depends on the disc-planet interactions. In these interactions, the planet and the disc may exchange mass in both gas and grains, energy via radiation andangular momentum via gravitational torques. These key processes have not yet been studied in detail and are the subject of this project. We shall begin the study by looking at pebble accretion onto precollapse gas clumps via both 3D discplanet numerical simulations and simplified 2D models. Next, zoom-in simulations onto the internal evolution of clumps will be employed to understand the outcome of pebble accretion in the planetary regime.

行星是由原行星盘形成的。虽然年轻而巨大，但这些圆盘预计会在几个木星质量的气体团上破碎。这些团块最终可能会演变成气态巨星、较小的行星或大质量的棕矮星。这些结果中的哪一个实现取决于盘-行星的相互作用。在这些相互作用中，行星和圆盘可能会交换气体和颗粒的质量，通过辐射交换能量，通过引力矩交换角动量。这些关键过程尚未得到详细研究，是本项目的主题。我们将开始的研究，通过两个三维盘状行星数值模拟和简化的二维模型，看卵石吸积到预塌陷气体团块。接下来，将采用放大模拟团块的内部演化，以了解行星制度中卵石吸积的结果。

项目成果

Constraining the initial planetary population in the gravitational instability model

• DOI: 10.1093/mnras/stz2006
• 发表时间: 2019-10-01
• 期刊: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
• 影响因子: 4.8
• 作者: Humphries, J.;Vazan, A.;Nayakshin, S.
• 通讯作者: Nayakshin, S.

On the origin of wide-orbit ALMA planets: giant protoplanets disrupted by their cores

• DOI: 10.1093/mnras/stz2497
• 发表时间: 2019-11-01
• 期刊: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
• 影响因子: 4.8
• 作者: Humphries, J.;Nayakshin, S.
• 通讯作者: Nayakshin, S.

Changes in the metallicity of gas giant planets due to pebble accretion

• DOI: 10.1093/mnras/sty569
• 发表时间: 2018-06-01
• 期刊: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
• 影响因子: 4.8
• 作者: Humphries, R. J.;Nayakshin, S.
• 通讯作者: Nayakshin, S.