Hot Jupiter

Hot Jupiters (sometimes called hot Saturns) are a class of gas giant exoplanets that are inferred to be physically similar to Jupiter but that have very short orbital periods (P < 10 days).^[1] The close proximity to their stars and high surface-atmosphere temperatures resulted in their informal name "hot Jupiters".^[2]

Hot Jupiters are the easiest extrasolar planets to detect via the radial-velocity method, because the oscillations they induce in their parent stars' motion are relatively large and rapid compared to those of other known types of planets. One of the best-known hot Jupiters is 51 Pegasi b. Discovered in 1995, it was the first extrasolar planet found orbiting a Sun-like star. 51 Pegasi b has an orbital period of about 4 days.^[3]

^ Wang, Ji; Fischer, Debra A.; Horch, Elliott P.; Huang, Xu (2015). "On the Occurrence Rate of Hot Jupiters in Different Stellar Environments". The Astrophysical Journal. 799 (2): 229. arXiv:1412.1731. Bibcode:2015ApJ...799..229W. doi:10.1088/0004-637X/799/2/229. S2CID 119117019.
^ "What worlds are out there?". Canadian Broadcasting Corporation. 25 August 2016. Retrieved 5 June 2017.
^ Wenz, John (10 October 2019). "Lessons from scorching hot weirdo-planets". Knowable Magazine. Annual Reviews. doi:10.1146/knowable-101019-2. Retrieved 4 April 2022.

[1] Wang, Ji; Fischer, Debra A.; Horch, Elliott P.; Huang, Xu (2015). "On the Occurrence Rate of Hot Jupiters in Different Stellar Environments". The Astrophysical Journal. 799 (2): 229. arXiv:1412.1731. Bibcode:2015ApJ...799..229W. doi:10.1088/0004-637X/799/2/229. S2CID 119117019.

[2] "What worlds are out there?". Canadian Broadcasting Corporation. 25 August 2016. Retrieved 5 June 2017.

[Wenz-3] Wenz, John (10 October 2019). "Lessons from scorching hot weirdo-planets". Knowable Magazine. Annual Reviews. doi:10.1146/knowable-101019-2. Retrieved 4 April 2022.

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