Extending Stellar Astrophysics to Planetary Masses

将恒星天体物理学扩展到行星质量

• 批准号: ST/W001209/1
• 负责人: Trent Dupuy
• 金额: $ 49.09万
• 依托单位: University of Edinburgh
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FW001209%2F1
• 关键词: Extending; Stellar; Astrophysics; Planetary; Masses

For the vast majority of stars, precise phsyical parameters (like mass and radius) are not known through direct measurement. Instead, astronomers rely on well-tested theoretical models to be able to infer such properties, especially for single stars where such measurements are typically not possible. The situation for gaseous objects that don't undergo nuclear fusion (brown dwarfs and gas-giant planets) is not nearly so advanced. This project aims to improve our theoretical models of such objects by gathering essential data for calibrating theoretical models: mass and radius measurements, as well as high-quality spectroscopy of those objects. The long-term aspiration of this work is to one day be able to understand "substellar" objects like gas giants and brown dwarfs as well as we understand stars.

对于绝大多数恒星，通过直接测量不知道精确的相性参数（如质量和半径）。取而代之的是，天文学家依靠经过良好的理论模型来推断这种特性，尤其是对于通常不可能进行此类测量的单星。不经过核融合的气态物体（棕色矮人和天然气巨星）的情况并不那么先进。该项目旨在通过收集校准理论模型的基本数据来改善我们对此类对象的理论模型：质量和半径测量以及这些对象的高质量光谱。这项工作的长期攻击是有一天能够理解诸如天然气巨头和棕色矮人之类的“替代”物体，以及我们了解恒星。

项目成果

Limits on the mass and initial entropy of 51 Eri b from Gaia EDR3 astrometry

Gaia EDR3 天体测量中 51 Eri b 的质量和初始熵的限制

• DOI: 10.1093/mnras/stab3148
• 发表时间: 2022
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Dupuy T

On the masses, age, and architecture of the VHS J1256-1257AB b system

关于 VHS J1256-1257AB b 系统的质量、寿命和架构

• DOI: 10.1093/mnras/stac3557
• 发表时间: 2023
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Dupuy T

Improved radius determinations for the transiting brown dwarf population in the era of Gaia and TESS

改进了盖亚和苔丝时代凌日褐矮星种群的半径确定

• DOI: 10.1093/mnras/stac3720
• 发表时间: 2023
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Carmichael T

Orbital architectures of planet-hosting binaries - II. Low mutual inclinations between planetary and stellar orbits

行星双星的轨道结构 - II。

• DOI: 10.1093/mnras/stac306
• 发表时间: 2022
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Dupuy T

TOI-2119: a transiting brown dwarf orbiting an active M-dwarf from NASA's TESS mission

TOI-2119：来自 NASA TESS 任务的一颗凌日棕矮星，围绕一颗活跃的 M 矮星运行

• DOI: 10.1093/mnras/stac1666
• 发表时间: 2022
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Carmichael T