Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/6400
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- Title
- The 2:1 resonant exoplanetary system orbiting HD 73526
- Related
- Astrophysical journal, Vol. 647, Issue 1, p. 594-599
- DOI
- 10.1086/503706
- Publisher
- University of Chicago Press
- Date
- 2006
- Author/Creator
- Tinney, C. G
- Author/Creator
- Butler, R. Paul
- Author/Creator
- Marcy, Geoffrey W
- Author/Creator
- Jones, Hugh R. A
- Author/Creator
- Laughlin, Gregory
- Author/Creator
- Carter, Brad D
- Author/Creator
- Bailey, Jeremy A
- Author/Creator
- O'Toole, Simon
- Description
- 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.
- Description
- 6 page(s)
- Subject Keyword
- planetary systems
- Subject Keyword
- stars : individual (HD 73526)
- Resource Type
- journal article
- Organisation
- Macquarie University. Australian Centre for Astrobiology
- Identifier
- http://hdl.handle.net/1959.14/6400
- Identifier
- ISSN:1538-4357
- Identifier
- mq-rm-2006000725
- Language
- eng
- Reviewed
