The Period-Ratio and Mass-Ratio Correlation in Extra-Solar Multiple Planetary Systems

Abstract

Employing the data from orbital periods and masses of extra-solar planets in 166 multiple planetary systems, the period-ratio and mass-ratio of adjacent planet pairs are studied. The correlation between the period-ratio and mass-ratio is confirmed and found to have a correlation coefficient of 0.5303 with a 99% confidence interval (0.3807, 0.6528). A comparison with the distribution of synthetic samples from a Monte Carlo simulation reveals the imprint of planet-planet interactions on the formation of adjacent planet pairs in multiple planetary systems.

accepted by MNRAS Letters, a hint of planet-planet interactions is revealed

References in corpus (3)

• On the Mass-Period Distributions and Correlations of Extrasolar Planets
• Data Analysis on the Extra-solar Planets Using Robust Clustering
• A Possible Correlation between Mass Ratio and Period Ratio in Multiple Planetary Systems

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