Mapping out the time-evolution of exoplanet processes

TL;DR

This paper discusses how future observations of well-characterized exoplanets can validate theories of their formation and evolution by analyzing observable correlations related to their properties and host star ages.

Contribution

It identifies key observable correlations and proposes compiling a large, precise dataset of exoplanets to understand their evolutionary processes.

Findings

Predicted correlations in exoplanet properties with host star age.

Potential to validate theories of exoplanet formation and migration.

Framework for future observational campaigns.

Abstract

There are many competing theories and models describing the formation, migration and evolution of exoplanet systems. As both the precision with which we can characterize exoplanets and their host stars, and the number of systems for which we can make such a characterization increase, we begin to see pathways forward for validating these theories. In this white paper we identify predicted, observable correlations that are accessible in the near future, particularly trends in exoplanet populations, radii, orbits and atmospheres with host star age. By compiling a statistically significant sample of well-characterized exoplanets with precisely measured ages, we should be able to begin identifying the dominant processes governing the time-evolution of exoplanet systems.