Identifying non-resonant Kepler planetary systems

Dimitri Veras, Eric B. Ford

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The Kepler mission has discovered a plethora of multiple transiting planet candidate exosystems, many of which feature putative pairs of planets near mean motion resonance commensurabilities. Identifying potentially resonant systems could help guide future observations and enhance our understanding of planetary formation scenarios. We develop and apply an algebraic method to determine which Kepler two-planet systems cannot be in a first-fourth order resonance, given the current, publicly available data. This method identifies when any potentially resonant angle of a system must circulate. We identify and list 70 near-resonant systems which cannot actually reside in resonance, assuming a widely used formulation for deriving planetary masses from their observed radii and that these systems do not contain unseen bodies that affect the interactions of the observed planets. This work strengthens the argument that a high fraction of exoplanetary systems may be near resonance but not actually in resonance.

Original languageEnglish (US)
Pages (from-to)L23-L27
JournalMonthly Notices of the Royal Astronomical Society: Letters
Volume420
Issue number1
DOIs
StatePublished - Feb 2012

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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