Exoplanets, Young Stars and Magnetic Fields
Investigating the formation and evolution of hot Jupiters in dense environments and characterising magnetic structures and accretion properties in young stars
The search for and characterization of exoplanets is a key topic in astrophysics, as exoplanets and their systems evolve through various physical processes and interactions with their stars. Understanding the formation and diversity of exoplanetary systems requires a systematic investigation of exoplanet populations. HRMOS, will enable efficient Doppler surveys of thousands of stars in clusters, the Galactic Bulge, and, possibly the closest galaxies in the Local Group; this would allow the detection of hundreds of hot giant planets around main sequence and giant stars of known age and composition, allowing the study of planet formation in diverse environments and constraints on the models to be put.
HRMOS will also provide insights into how host stars’ evolution, including magnetic activity and interactions with circumstellar material, influences planetary systems. By offering high-resolution, time-resolved spectroscopy of stars in young clusters, HRMOS will track the velocity evolution of features tied to magnetic fields and accretion, and use Doppler tomography to map starspots, prominences, and other phenomena. The multiplexing advantage will allow for synoptic monitoring of large samples in young star clusters, deepening our understanding of planet formation.