Toward a homogeneous set of transiting planet parameters

TL;DR

This paper performs a comprehensive, uniform analysis of 23 transiting exoplanets to identify patterns and correlations among their properties, improving consistency and revealing new relationships involving stellar metallicity.

Contribution

It introduces a standardized methodology for analyzing transiting planet data and uncovers new correlations, especially with stellar metallicity, enhancing understanding of planet formation and evolution.

Findings

Identification of new correlations involving stellar metallicity.

Standardized analysis methodology for transiting planet data.

Reevaluation of previously proposed planet property correlations.

Abstract

With 40 or more transiting exoplanets now known, the time is ripe to seek patterns and correlations among their observed properties, which may give important insights into planet formation, structure, and evolution. This task is made difficult by the widely different methodologies that have been applied to measure their properties in individual cases. Furthermore, in many systems our knowledge of the planet properties is limited by the knowledge of the properties of the parent stars. To address these difficulties we have undertaken the first comprehensive analysis of the data for 23 transiting planets using a uniform methodology. We revisit several of the recently proposed correlations, and find new ones involving the metallicity of the parent stars.