Tinney, C. G. and Butler, R. Paul and Marcy, Geoffrey W. and Jones, Hugh R. A. and Laughlin, Gregory and Carter, Brad D. and Bailey, Jeremy and O'Toole, Simon J. (2006) The 2:1 resonant exoplanetary system orbiting HD 73526. The Astrophysical Journal, 647 (1). pp. 594-599. ISSN 0004-637X
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Official URL: http://www.journals.uchicago.edu/doi/pdf/10.1086/503706
Abstract
[Abstract]: We report the detection of a second exoplanet orbiting the G6V dwarf HD73526. This second planet has an orbital period of 377 d, putting it in a 2:1 resonance with the previously known exoplanet, the orbital period for which is updated to 188 d. Dynamical modeling of the combined system allows solution for a self-consistent set of orbital elements for both components. HD73526 is the fourth exoplanetary system (of a total of 18 systems with 2 or more components currently known) to have components detected in 2:1 resonance. Finding such a large fraction of multiple planets (more than 20 per cent) in 2:1 resonance strongly suggests that orbital migration, halted by stabilisation in a trapping resonance, plays an important role in the evolution of exoplanets in multiple planet systems.
| Item Type: | Article (DEST Category C) |
|---|---|
| Additional Information: | Published version deposited in accordance with the copyright policy of the publisher. |
| Uncontrolled Keywords: | planetary systems, stars, HD73526 |
| Fields of Research (FOR2008): | UNSPECIFIED |
| Subjects: | 240000 Physical Sciences > 240100 Astronomical Sciences |
| Socio-Economic Objective (SEO2008): | UNSPECIFIED |
| ID Code: | 2052 |
| Deposited By: | epEditor USQ |
| Deposited On: | 11 Oct 2007 10:56 |
| Last Modified: | 28 May 2009 10:14 |
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