The 2:1 resonant exoplanetary system orbiting HD 73526
Article
Article Title | The 2:1 resonant exoplanetary system orbiting HD 73526 |
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ERA Journal ID | 1057 |
Article Category | Article |
Authors | Tinney, Chris G. (Author), Butler, R. Paul (Author), Marcy, Geoffrey W. (Author), Jones, Hugh R. A. (Author), Laughlin, Gregory (Author), Carter, Brad D. (Author), Bailey, Jeremy (Author) and O'Toole, Simon J. (Author) |
Journal Title | The Astrophysical Journal: an international review of astronomy and astronomical physics |
Journal Citation | 647 (1), pp. 594-599 |
Number of Pages | 6 |
Year | 2006 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-637X |
1538-4357 | |
Digital Object Identifier (DOI) | https://doi.org/10.1086/503706 |
Web Address (URL) | https://iopscience.iop.org/article/10.1086/503706 |
Abstract | We report the detection of a second exoplanet orbiting the G6 V dwarf HD 73526. This second planet has an orbital period of 377 days, putting it in a 2:1 resonance with the previously known exoplanet, the orbital period for which is updated to 188 days. Dynamical modeling of the combined system allows solution for a self-consistent set of orbital elements for both components. HD 73526 is the fourth exoplanetary system (of a total of 18 systems with two or more components currently known) to have components detected in 2:1 resonance. Finding such a large fraction of multiple planets (more than 20%) in 2:1 resonance strongly suggests that orbital migration, halted by stabilization in a trapping resonance, plays an important role in the evolution of exoplanets in multiple planet systems. |
Keywords | planetary systems, stars, HD73526 |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
519999. Other physical sciences not elsewhere classified | |
Public Notes | For access to this article, please click on the URL link provided. |
Byline Affiliations | Anglo-Australian Observatory, Australia |
Carnegie Institution of Washington, United States | |
University of California, United States | |
University of Hertfordshire, United Kingdom | |
Department of Biological and Physical Sciences | |
Macquarie University |
https://research.usq.edu.au/item/9y09y/the-2-1-resonant-exoplanetary-system-orbiting-hd-73526
2003
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