TOI-4641b: an aligned warm Jupiter orbiting a bright (V=7.5) rapidly rotating F-star
Article
Article Title | TOI-4641b: an aligned warm Jupiter orbiting a bright (V=7.5) rapidly rotating F-star |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Bieryla, Allyson, Zhou, George, Garcia-Mejia, Juliana, Fairnington, Tyler R, Latham, David W, Carter, Brad, Dong, Jiayin, Huang, Chelsea X, Murphy, Simon J, Shporer, Avi, Collins, Karen A, Quinn, Samuel N, Everett, Mark E, Buchhave, Lars A, Tronsgaard, René, Charbonneau, David, Johnson, Marshall C, Esquerdo, Gilbert A, Calkins, Michael, Berlind, Perry, Jenkins, Jon M, Ricker, George R, Seager, Sara, Winn, Joshua N, Barclay, Thomas, Mireles, Ismael, Paegert, Martin and Twicken, Joseph D |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 527 (4), pp. 10955-10964 |
Number of Pages | 10 |
Year | 2024 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stad3785 |
Web Address (URL) | https://academic.oup.com/mnras/article/527/4/10955/7464053 |
Abstract | We report the discovery of TOI-4641b, a warm Jupiter transiting a rapidly rotating F-type star with a stellar effective temperature of 6560 K. The planet has a radius of 0.73 RJup, a mass smaller than 3.87 MJup(3σ), and a period of 22.09 d. It is orbiting a bright star (V=7.5 mag) on a circular orbit with a radius and mass of 1.73 R⊙ and 1.41 M⊙. Follow-up ground-based photometry was obtained using the Tierras Observatory. Two transits were also observed with the Tillinghast Reflector Echelle Spectrograph, revealing the star to have a low projected spin-orbit angle e (λ=1.41+0.76 −0.76◦). Such obliquity measurements for stars with warm Jupiters are relatively few, and may shed light on the formation of warm Jupiters. Among the known planets orbiting hot and rapidly rotating stars, TOI-4641b is one of the longest period planets to be thoroughly characterized. Unlike hot Jupiters around hot stars which are more often misaligned, the warm Jupiter TOI-4641b is found in a well-aligned orbit. Future exploration of this parameter space can add one more dimension to the star–planet orbital obliquity distribution that has been well sampled for hot Jupiters. |
Keywords | exoplanets; methods: observational; techniques: photometric; techniques: radial velocities; techniques: spectroscopic |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510199. Astronomical sciences not elsewhere classified |
Byline Affiliations | Center for Astrophysics Harvard and Smithsonian, United States |
Centre for Astrophysics | |
Massachusetts Institute of Technology, United States | |
Flatiron Institute, United States | |
NSF's National Optical Infrared Astronomy Research Laboratory (NOIRLab), United States | |
Technical University of Denmark, Denmark | |
Ohio State University, United States | |
NASA Ames Research Center, United States | |
Princeton University, United States | |
NASA Goddard Space Flight Center, United States | |
University of New Mexico, United States | |
SETI Institute, United States |
https://research.usq.edu.au/item/z5qq2/toi-4641b-an-aligned-warm-jupiter-orbiting-a-bright-v-7-5-rapidly-rotating-f-star
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