Outflows and Disks around Young Stars: Synergies for the Exploration of Ullyses Spectra (ODYSSEUS)
Abstract
The ULLYSES DDT Survey of low-mass pre-main sequence stars, coupled with forthcoming data from ALMA and JWST, will provide the foundation to revolutionize our understanding of the relationship between young stars and their protoplanetary disks. A comprehensive evaluation of the physics of disk evolution and planet formation requires understanding the intricate relationships between the mass accretion, mass outflow, and disk structure. Our team of 55 young star experts from around the world will bring their combined knowledge to bear on the ULLYSES FUV spectral database, ensuring a uniform and systematic approach in order to (1) measure how the accretion flow depends on the accretion rate and magnetic structures, (2) determine where winds and jets are launched and how mass loss rates compare to accretion, and (3) establish the influence of FUV radiation on the chemistry of the warm inner regions of planet-forming disks. We will also work together to acquire and provide contemporaneous observations at X-ray, optical, near-IR, and mm wavelengths to enhance the impact of the ULLYSES data. By the end of our comprehensive 3-year program, we will provide the best measurements of the levels and evolution of mass accretion of protoplanetary disks, the properties and magnitudes of (inner) disk mass loss, and the UV radiation fields that determine ionization levels and drive disk chemistry. This team addresses the need for labor essential to maximize the scientific return on the ULYSSES DDT young star program, in line with funding requests allocated to Legacy GO programs or Treasury programs.
- Publication:
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HST Proposal
- Pub Date:
- May 2020
- Bibcode:
- 2020hst..prop16129H