A Possible Correlation between Mass Ratio and Period Ratio in Multiple Planetary Systems

Abstract

We report on a possible correlation between the mass ratio and period ratio of pairs of adjacent planets in extra-solar planetary systems. Monte-Carlo simulations show that the effect is significant to level of 0.7%, as long as we exclude two pairs of planets whose periods are at the 1:2 resonance. Only the next few multiple systems can tell if the correlation is real.

8 pages, 2 figures, published in The Astrophysical Journal Letters

References in corpus (4)

• The Migration and Growth of Protoplanets in Protostellar Discs
• Orbital Evolution and Migration of Giant Planets: Modeling Extrasolar Planets
• On the Mass-Period Correlation of the Extrasolar Planets
• On disc driven inward migration of resonantly coupled planets with application to the system around GJ876

Cited by in corpus (8)

• The CORALIE survey for southern extra-solar planets. XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE
• A pair of planets around HD 202206 or a circumbinary planet?
• Astrometric Methods and Instrumentation to Identify and Characterize Extrasolar Planets: A Review
• On the Possible Correlation Between the Orbital Periods of Extra-solar Planets and the Metallicity of the Host Stars
• A possible correlation between planetary radius and orbital period for small planets
• The Period-Ratio and Mass-Ratio Correlation in Extra-Solar Multiple Planetary Systems
• Constraining Planetary Formation Models Using Conditional Occurrences of Various Planet Types
• On the Period-Ratio-Mass-Ratio Correlation of Extra-Solar Multi-Planet Systems