A spin-orbit alignment for the hot Jupiter HATS-3b
Article
Article Title | A spin-orbit alignment for the hot Jupiter HATS-3b |
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ERA Journal ID | 1057 |
Article Category | Article |
Authors | Addison, B. C. (Author), Tinney, C. G. (Author), Wright, D. J. (Author) and Bayliss, D. (Author) |
Journal Title | The Astrophysical Journal: an international review of astronomy and astronomical physics |
Journal Citation | 792 (2), pp. 1-10 |
Article Number | 112 |
Number of Pages | 11 |
Year | 2014 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-637X |
1538-4357 | |
Digital Object Identifier (DOI) | https://doi.org/10.1088/0004-637X/792/2/112 |
Web Address (URL) | https://iopscience.iop.org/article/10.1088/0004-637X/792/2/112 |
Abstract | We have measured the alignment between the orbit of HATS-3b (a recently discovered, slightly inflated Hot Jupiter) and the spin axis of its host star. Data were obtained using the CYCLOPS2 optical-fiber bundle and its simultaneous calibration system feeding the UCLES spectrograph on the Anglo-Australian Telescope. The sky-projected spin-orbit angle of λ = 3° ± 25° was determined from spectroscopic measurements of the Rossiter-McLaughlin effect. This is the first exoplanet discovered through the HATSouth transit survey to have its spin-orbit angle measured. Our results indicate that the orbital plane of HATS-3b is consistent with being aligned to the spin axis of its host star. The low obliquity of the HATS-3 system, which has a relatively hot mid F-type host star, agrees with the general trend observed for Hot Jupiter host stars with effective temperatures >6250 K to have randomly distributed spin-orbit angles. Based on observations obtained at the Anglo-Australian Telescope, Siding Spring, Australia. |
Keywords | planets and satellites, dynamical evolution and stability, stars, individual, HATS-3, techniques radial velocities |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | For access to this article, please click on the URL link provided. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Centre for Astrophysics (Research) |
University of New South Wales | |
Australian National University |
https://research.usq.edu.au/item/q53q1/a-spin-orbit-alignment-for-the-hot-jupiter-hats-3b
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