红巨星周围的系外行星:分布与宜居性

IF 3.2 Q2 ASTRONOMY & ASTROPHYSICS Galaxies Pub Date : 2023-07-11 DOI:10.3390/galaxies11060112
Ruixuan E. Chen, Jonathan H. Jiang, P. Rosen, Kristen A. Fahy, Yanbei Chen
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引用次数: 0

摘要

随着系外行星搜寻工作的继续,越来越多的系外行星被发现围绕红巨星运行。我们利用美国宇航局系外行星档案的当前数据来研究红巨星周围的行星分布及其在宿主宜居带的存在情况。同时,我们还探索了随着恒星半径的增加,演化恒星的行星质量和轨道半主轴的分布情况。从行星的距离分布来看,我们发现了恒星在后主序演化过程中被吞噬的证据。我们发现9颗红巨星寄居的系外行星和21颗亚巨星寄居的系外行星处于乐观计算的宜居带内,其中5颗和17颗处于保守计算的宜居带内。所有在宜居带内探测到的行星都围绕着处于早期演化阶段的恒星运行。我们相信,如果有更强大的仪器,可能会在处于演化后期的恒星周围发现更多宜居行星。
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Exoplanets around Red Giants: Distribution and Habitability
As the search for exoplanets continues, more are being discovered orbiting Red Giant stars. We use current data from the NASA Exoplanet Archive to investigate planet distribution around Red Giant stars and their presence in the host’s habitable zone. As well, we explore the distribution of planet mass and orbital semi major axis for evolved stars with increasing stellar radii. From the distance distribution of the planets, we found evidence of engulfment during the post-Main Sequence evolution of the star. We found 9 Red Giant-hosted exoplanets, and 21 Subgiant-hosted exoplanets to be in the optimistically calculated habitable zone, 5 and 17 of which are in a more conservatively calculated habitable zone. All the planets detected within their habitable zone orbit stars that are in early stages of evolution. We believe that with more powerful instrumentation, more habitable planets may be found around stars that are in later stages of evolution.
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来源期刊
Galaxies
Galaxies Physics and Astronomy-Astronomy and Astrophysics
CiteScore
4.90
自引率
12.00%
发文量
100
审稿时长
11 weeks
期刊介绍: Es una revista internacional de acceso abierto revisada por pares que proporciona un foro avanzado para estudios relacionados con astronomía, astrofísica y cosmología. Areas temáticas Astronomía Astrofísica Cosmología Astronomía observacional: radio, infrarrojo, óptico, rayos X, neutrino, etc. Ciencia planetaria Equipos y tecnologías de astronomía. Ingeniería Aeroespacial Análisis de datos astronómicos. Astroquímica y Astrobiología. Arqueoastronomía Historia de la astronomía y cosmología. Problemas filosóficos en cosmología.
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