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The Hubble UV Legacy Library of Young Stars as Essential Standards (ULLYSES)Director's Discretionary Program of low-mass pre-main-sequence stars, coupledwith forthcoming data from ALMA and JWST, will provide the foundation torevolutionize our understanding of the relationship between young stars andtheir protoplanetary disks. A comprehensive evaluation of the physics of diskevolution and planet formation requires understanding the intricaterelationships between mass accretion, mass outflow, and disk structure. Here wedescribe the Outflows and Disks around Young Stars: Synergies for theExploration of ULLYSES Spectra (ODYSSEUS) Survey and present initial results ofthe classical T Tauri Star CVSO 109 in Orion OB1b as a demonstration of thescience that will result from the survey. ODYSSEUS will analyze the ULLYSESspectral database, ensuring a uniform and systematic approach in order to (1)measure how the accretion flow depends on the accretion rate and magneticstructures, (2) determine where winds and jets are launched and how mass-lossrates compare with accretion, and (3) establish the influence of FUV radiationon the chemistry of the warm inner regions of planet-forming disks. ODYSSEUSwill also acquire and provide contemporaneous observations at X-ray, optical,NIR, and millimeter wavelengths to enhance the impact of the ULLYSES data. Ourgoal is to provide a consistent framework to accurately measure the level andevolution of mass accretion in protoplanetary disks, the properties andmagnitudes of inner-disk mass loss, and the influence of UV radiation fieldsthat determine ionization levels and drive disk chemistry.

The ODYSSEUS Survey. Motivation and First Results: Accretion, Ejection, and Disk Irradiation of CVSO 109