A nearly polar orbit for the extrasolar hot Jupiter WASP-79b
Article
Article Title | A nearly polar orbit for the extrasolar hot Jupiter WASP-79b |
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ERA Journal ID | 45091 |
Article Category | Article |
Authors | Addison, B. C. (Author), Tinney, C. G. (Author), Wright, D. J. (Author), Bayliss, D. (Author), Zhou, G. (Author), Hartman, J. D. (Author), Bakos, G. A. (Author) and Schmidt, B. (Author) |
Journal Title | The Astrophysical Journal Letters |
Journal Citation | 774 (1), pp. 1-5 |
Article Number | L9 |
Number of Pages | 5 |
Year | 2013 |
Publisher | IOP Publishing |
Place of Publication | United Kingdom |
ISSN | 2041-8205 |
2041-8213 | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/2041-8205/774/1/l9 |
Web Address (URL) | https://iopscience.iop.org/article/10.1088/2041-8205/774/1/L9 |
Abstract | We report the measurement of a spin-orbit misalignment for WASP-79b, a recently discovered, bloated hot Jupiter from the Wide Angle Search for Planets (WASP) survey. Data were obtained using the CYCLOPS2 optical-fiber bundle and its simultaneous calibration system feeding theUCLES spectrograph on theAnglo-Australian Telescope. We have used the Rossiter McLaughlin effect to determine the sky-projected spin-orbit angle to be λ = -106 +19-13 This result indicates a significant misalignment between the spin axis of the host star and the orbital plane of the planet-the planet being in a nearly polar orbit. WASP-79 is consistent with other stars that have Teff < 6250 Kand host hot Jupiters in spin-orbit misalignment. |
Keywords | planets and satellites: dynamical evolution and stability; stars: individual (WASP-79); techniques: radial velocities; Astrophysics - Earth; and Planetary Astrophysics |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | University of New South Wales |
Australian National University | |
Princeton University, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6x23/a-nearly-polar-orbit-for-the-extrasolar-hot-jupiter-wasp-79b
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