The Obliquity of HIP 67522 b: A 17 Myr Old Transiting Hot, Jupiter-sized Planet
Article
Article Title | The Obliquity of HIP 67522 b: A 17 Myr Old Transiting Hot, Jupiter-sized Planet |
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ERA Journal ID | 45091 |
Article Category | Article |
Authors | Heitzmann, Alexis (Author), Zhou, George (Author), Quinn, Samuel N. (Author), Marsden, Stephen C. (Author), Wright, Duncan (Author), Petit, Pascal (Author), Vanderburg, Andrew M. (Author), Bouma, Luke G. (Author), Mann, Andrew W. (Author) and Rizzuto, Aaron C. (Author) |
Journal Title | The Astrophysical Journal Letters |
Journal Citation | 922 (1), pp. 1-6 |
Article Number | L1 |
Number of Pages | 6 |
Year | 2021 |
Publisher | IOP Publishing |
Place of Publication | United Kingdom |
ISSN | 2041-8205 |
2041-8213 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/2041-8213/ac3485 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/2041-8213/ac3485 |
Abstract | HIP 67522 b is a 17 Myr old, close-in (P orb = 6.96 days), Jupiter-sized (R = 10 R ⊕) transiting planet orbiting a Sun-like star in the Sco-Cen OB association. We present our measurement of the system's projected orbital obliquity via two spectroscopic transit observations using the CHIRON spectroscopic facility. We present a global model that accounts for large surface brightness features typical of such young stars during spectroscopic transit observations. With a value of | λ | = 5.8-5.7+2.8 it is unlikely that this well-aligned system is the result of a high-eccentricity-driven migration history. By being the youngest planet with a known obliquity, HIP 67522 b holds a special place in contributing to our understanding of giant planet formation and evolution. Our analysis shows the feasibility of such measurements for young and very active stars. |
Keywords | Exoplanet astronomy (486); Exoplanet systems (484); Planetaryalignment (1243); Planet formation (1241); Radial velocity (1332); Transit photometry (1709) |
Related Output | |
Is part of | Exploring the origins and diversity of planetary systems: insights from young giant planets |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Centre for Astrophysics |
Centre for Astrophysics | |
Center for Astrophysics Harvard and Smithsonian, United States | |
University of Toulouse, France | |
Massachusetts Institute of Technology, United States | |
Princeton University, United States | |
University of North Carolina, United States | |
University of Texas at Austin, United States |
https://research.usq.edu.au/item/q703v/the-obliquity-of-hip-67522-b-a-17-myr-old-transiting-hot-jupiter-sized-planet
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