The 2:1 resonant exoplanetary system orbiting HD73526

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dc.creatorTinney, C. G.
dc.creatorButler, R. Paul
dc.creatorMarcy, Geoffrey W.
dc.creatorJones, Hugh R. A.
dc.creatorLaughlin, Gregory
dc.creatorCarter, Brad D.
dc.creatorBailey, Jeremy A.
dc.creatorO'Toole, Simon
dc.date2006-02-25
dc.date.accessioned2026-07-07T10:43:38Z
dc.date.available2026-07-07T10:43:38Z
dc.descriptionWe 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 188d. 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.
dc.descriptionTo appear in The Astrophysical Journal
dc.identifierhttps://arxiv.org/abs/astro-ph/0602557
dc.identifierhttp://arxiv.org/abs/astro-ph/0602557
dc.identifierAstrophys.J.647:594-599,2006
dc.identifierdoi:10.1086/503706
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182311
dc.subjectAstrophysics
dc.titleThe 2:1 resonant exoplanetary system orbiting HD73526
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