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- Title
Exoplanets around Red Giants: Distribution and Habitability.
- Authors
Chen, Ruixuan E.; Jiang, Jonathan H.; Rosen, Philip E.; Fahy, Kristen A.; Chen, Yanbei
- Abstract
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.
- Subjects
UNITED States. National Aeronautics &; Space Administration; EXTRASOLAR planets; HABITABLE planets; STELLAR evolution; PLANETARY mass; STELLAR orbits; GIANT stars
- Publication
Galaxies (2075-4434), 2023, Vol 11, Issue 6, p112
- ISSN
2075-4434
- Publication type
Article
- DOI
10.3390/galaxies11060112