The 2 : 1 Resonant Exoplanetary System Orbiting HD 73526 | Zendy

C. G. Tinney | Zendy; R. Paul Butler | Zendy; Geoffrey W. Marcy | Zendy; H. R. A. Jones | Zendy; Gregory Laughlin | Zendy; Brad Carter | Zendy; Jeremy Bailey | Zendy; S. J. O’Toole | Zendy

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The 2 : 1 Resonant Exoplanetary System Orbiting HD 73526

Author(s) -

C. G. Tinney,

R. Paul Butler,

Geoffrey W. Marcy,

H. R. A. Jones,

Gregory Laughlin,

Brad Carter,

Jeremy Bailey,

S. J. O’Toole

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/503706

Subject(s) - exoplanet , planet , physics , resonance (particle physics) , orbital period , planetary system , orbital elements , astronomy , astrobiology , stars , atomic physics

[Abstract]: We report the detection of a second exoplanet orbiting the G6V dwarf HD73526.\udThis second planet has an orbital period of 377 d, putting it in a 2:1 resonance with the\udpreviously known exoplanet, the orbital period for which is updated to 188 d. Dynamical\udmodeling of the combined system allows solution for a self-consistent set of orbital\udelements for both components. HD73526 is the fourth exoplanetary system (of a total\udof 18 systems with 2 or more components currently known) to have components detected\udin 2:1 resonance. Finding such a large fraction of multiple planets (more than 20 per\udcent) in 2:1 resonance strongly suggests that orbital migration, halted by stabilisation in\uda trapping resonance, plays an important role in the evolution of exoplanets in multiple\udplanet systems

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