Mature Planetary Systems

Research Projects

Combined Radial-velocity and astrometry modelling to constrain the population of wide-orbiting gas giants

We use precision radial-velocity instruments in Chile to uncover the first Jupiter-analogues orbiting metal-rich stars. The key to our project is the combination with space-based astrometric measurements taken by Hipparcos and Gaia, whereby we are developing statistical models that can search the parameter space using a joint model to not only detect these planets, but also to measure their absolute masses and orbital characteristics.

People

Dr. James Jenkins

The Development of Bayesian Statistical Models to Detect and Characterize Exoplanets

We are developing new modeling algorithms that use Markov-chain Monte Carlo (MCMC) methods, coupled to Bayesian statistics, with the goal of discovering new low-mass planets and better characterizing their host stars. A key part of this work is the development of new and improved noise models that consider the effects of both instrumental and stellar noise sources.

People

Dr. James Jenkins

The Search for New Benchmark Extreme Neptune-like Planets

We use high precision radial-velocity instruments in Chile to confirm planet candidates identified by the Transiting Exoplanet Survey Satellite (TESS). These planets will then be placed into our sample for atmospheric follow-up observations, with the overall goal to better characterize the population of rare low-mass worlds.

People

Dr. James Jenkins

Understanding the Role of Clouds in the Metal-rich Atmospheres of Hot Neptunes

We use both ground based high-resolution spectroscopy and space-based secondary eclipse measurements to study the chemical compositions, physical structures, and dynamical processes of the atmospheres of extreme Neptune-like exoplanets. By identifying the metallic structure of clouds in the atmosphere of planets like LTT9779b for example, we can better understand the formation histories and evolutionary pathways for such worlds.

People

Dr. James Jenkins

Exomoon Hunters

The project aims at discovering natural satellites around high-contrast imaging planets. This is the first group trying to detect satellites via direct methods. We are using both the direct imaging technique and the radial velocity technique. We are using data from the best available imagers, such as SPHERE, NIRC2, NACO, WFC3, etc. We also have a CRIRES+ program to monitor RV of two high-contrast imaging companions.

People

Dr. Alice Zurlo

Mature Planetary Systems

Research Projects

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