Orbital resonances in exoplanetary systems

E. A. Popova, I. I. Shevchenko

Research output

Abstract

At present, more than 700 exoplanetary systems are known to have been discovered. They incorporate more than 130 multiplanet systems, i.e. those hosting two or more planets. The orbital resonance and near-resonance phenomena are ubiquitous in them. We present a statistical and dynamical analysis of the resonance structure of the multiplanet systems and planetary systems of binary stars. We have built distributions of the orbital period ratios, separately considering the cases of inner and outer location of the massive perturber. The histograms reveal apparent peaks close to the first order orbital resonances 2/1 and 3/2 in both cases; this confirms previous findings. We have performed analytical modelling of the histograms, and obtained exact positions of the peaks. Moreover, we have built the "period ratio-eccentricity" diagrams, with collision curves superimposed, so that to find anomalous systems.

Original languageEnglish
Article number012006
JournalJournal of Physics: Conference Series
Volume572
Issue number1
DOIs
Publication statusPublished - 1 Jan 2014
Event16th Russian Youth Conference on Physics and Astronomy, PhysicA.SPb 2013 - Saint-Petersburg
Duration: 23 Oct 201324 Oct 2013

Fingerprint

histograms
planetary systems
binary stars
eccentricity
statistical analysis
planets
diagrams
orbitals
collisions
curves

Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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Orbital resonances in exoplanetary systems. / Popova, E. A.; Shevchenko, I. I.

In: Journal of Physics: Conference Series, Vol. 572, No. 1, 012006, 01.01.2014.

Research output

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AB - At present, more than 700 exoplanetary systems are known to have been discovered. They incorporate more than 130 multiplanet systems, i.e. those hosting two or more planets. The orbital resonance and near-resonance phenomena are ubiquitous in them. We present a statistical and dynamical analysis of the resonance structure of the multiplanet systems and planetary systems of binary stars. We have built distributions of the orbital period ratios, separately considering the cases of inner and outer location of the massive perturber. The histograms reveal apparent peaks close to the first order orbital resonances 2/1 and 3/2 in both cases; this confirms previous findings. We have performed analytical modelling of the histograms, and obtained exact positions of the peaks. Moreover, we have built the "period ratio-eccentricity" diagrams, with collision curves superimposed, so that to find anomalous systems.

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