Exoplanets & Exomoons

Exoplanets Around Red Giants: Distribution And Habitability

By Keith Cowing
Status Report
July 13, 2023
Filed under , , ,
Exoplanets Around Red Giants: Distribution And Habitability
Teff vs. Seff plot for Red Giant planets (red dots) with optimistic habitable planets denoted in green. Boundaries for Teq, conservative and optimistic HZ are shown in solid, dotted and dashed lines, respectively. — astro-ph.EP

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 update the power law relation between planet mass and stellar radius found in previous studies and provide more detailed investigations on this topic. Ten Red Giant-hosted exoplanets are found to be in the optimistically calculated habitable zone, five of which are in a more conservatively calculated habitable zone.

We believe additional exoplanets can be found in habitable zones around Red Giants using the direct imaging and other methods, along with more powerful detection instrumentation.

Ruixuan E. Chen, Jonathan H. Jiang, Philip E. Rosen, Kristen A. Fahy, Yanbei Chen

Subjects: Earth and Planetary Astrophysics (astro-ph.EP); Solar and Stellar Astrophysics (astro-ph.SR)
Cite as: arXiv:2307.04975 [astro-ph.EP] (or arXiv:2307.04975v1 [astro-ph.EP] for this version)
Submission history
From: Jonathan Jiang
[v1] Tue, 11 Jul 2023 02:29:43 UTC (1,550 KB)

Explorers Club Fellow, ex-NASA Space Station Payload manager/space biologist, Away Teams, Journalist, Lapsed climber, Synaesthete, Na’Vi-Jedi-Freman-Buddhist-mix, ASL, Devon Island and Everest Base Camp veteran, (he/him) πŸ––πŸ»