Unearthing the dependence of exoplanet populations on stellar parameters

With the advent of a new generation of instrumentation, we’re developing the capabilities to measure precise planetary parameters for planets orbiting M dwarfs. In this presentation, I will discuss novel statistical techniques which leverage the precise measurements of planetary and stellar properties, by using nonparametric methods of modelling and inference. These models allow us to jointly model the exoplanet mass, radius, and insolation along with stellar mass and metallicity. In particular for the low mass M dwarfs, the dependence on stellar mass can be quite pronounced due to the large variation in stellar mass across the spectral sub type (~ 6x - 7x). 

I will discuss a few examples of the application of this technique: in particular with respect to the trends seen in the Jupiter and Neptune planet populations with respect to different stellar parameters. Another such example is the change in radius-period gap with stellar mass, metallicity and insolation. These high dimensional frameworks offer a holistic approach to study the interdependence of various observed exoplanet and host stellar properties.