Chen, R.E.; Jiang, J.H.; Rosen, P.E.; Fahy, K.A.; Chen, Y. Exoplanets around Red Giants: Distribution and Habitability. Galaxies2023, 11, 112.
Chen, R.E.; Jiang, J.H.; Rosen, P.E.; Fahy, K.A.; Chen, Y. Exoplanets around Red Giants: Distribution and Habitability. Galaxies 2023, 11, 112.
Chen, R.E.; Jiang, J.H.; Rosen, P.E.; Fahy, K.A.; Chen, Y. Exoplanets around Red Giants: Distribution and Habitability. Galaxies2023, 11, 112.
Chen, R.E.; Jiang, J.H.; Rosen, P.E.; Fahy, K.A.; Chen, Y. Exoplanets around Red Giants: Distribution and Habitability. Galaxies 2023, 11, 112.
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. 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.
Keywords
exoplanet; red giant; habitable zone
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
