Unveiling Transiting Exosatellites, Moons, and Planets in the Orion Nebula Cluster

In this talk, I present the science goals and design considerations for a proposed 30-day observational campaign using the Nancy Grace Roman Space Telescope. The survey, coined TEMPO (Transiting Exosatellites, Moons, and Planets in Orion), would provide high-resolution, short-cadence infrared photometry of the Orion Nebula Cluster and surrounding regions. The survey would probe a dynamic star-forming region, providing key insights into the demographics of exosatellites orbiting free-floating planets and brown dwarfs. I discuss the broader science goals that can be accomplished with TEMPO observations, which include (a) the measurement of observational constraints to test prevailing theories of the formation and evolution of moons, planets, and stars; (b) the detection of widely separated exoplanets orbiting young stars; (c) rotational variability investigations of young stars and brown dwarfs; (d) the detection and characterization of dipper stars; (e) the detection of young eclipsing binaries; (f) the construction of more physically accurate structural and extinction maps of the Orion Nebula Cluster and surrounding regions; (g) mapping emission features that trace shocked gas; (h) the construction of a dynamical map of cluster members using proper motions; and (i) the search for transients via deep extragalactic observations reaching a limiting magnitude of 30 mag (F146 filter).