The 2: 1 resonant exoplanetary system orbiting HD 73526

C. G. Tinney; R. Paul Butler; Geoffrey W. Marcy; Hugh R A Jones; Gregory Laughlin; Brad D. Carter; Jeremy A. Bailey; Simon O'Toole

doi:10.1086/503706

The 2: 1 resonant exoplanetary system orbiting HD 73526

C. G. Tinney^*, R. Paul Butler, Geoffrey W. Marcy, Hugh R A Jones, Gregory Laughlin, Brad D. Carter, Jeremy A. Bailey, Simon O'Toole

^*Corresponding author for this work

Macquarie University Administration Unit

Research output: Contribution to journal › Article › peer-review

69 Citations (Scopus)

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.

Original language	English
Pages (from-to)	594-599
Number of pages	6
Journal	Astrophysical Journal
Volume	647
Issue number	1 I
DOIs	https://doi.org/10.1086/503706
Publication status	Published - 10 Aug 2006

Keywords

Planetary systems
Stars: individual (HD 73526)

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10.1086/503706

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title = "The 2: 1 resonant exoplanetary system orbiting HD 73526",

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: individual (HD 73526)",

author = "Tinney, {C. G.} and Butler, {R. Paul} and Marcy, {Geoffrey W.} and Jones, {Hugh R A} and Gregory Laughlin and Carter, {Brad D.} and Bailey, {Jeremy A.} and Simon O'Toole",

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T2 - 1 resonant exoplanetary system orbiting HD 73526

AU - Tinney, C. G.

AU - Butler, R. Paul

AU - Marcy, Geoffrey W.

AU - Jones, Hugh R A

AU - Laughlin, Gregory

AU - Carter, Brad D.

AU - Bailey, Jeremy A.

AU - O'Toole, Simon

PY - 2006/8/10

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AB - 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.

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KW - Stars: individual (HD 73526)

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The 2: 1 resonant exoplanetary system orbiting HD 73526

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Keywords

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