| |
 |
| Paper: |
The Evolution of Planetary Systems: FUSEs View of the First 20-30 Myr |
| Volume: |
348, Astrophysics in the Far Ultraviolet: Five Years of Discovery with FUSE |
| Page: |
281 |
| Authors: |
Grady, C.A.; Williger, G.M.; Bouret, J.-C.; Roberge, A.; Sahu, M.; Woodgate, B.E. |
| Abstract: |
We review the contribution of FUV spectroscopy in furthering our understanding of planetary system evolution over the first 20-30 Myr. In tandem with high spatial resolution imagery of circumstellar disks, secure dating of young stars, and IR and x-ray data, FUSE has established that the disks around stars with 0.7≤M≤2.5 MSolar evolve on similar timescales and in the same way. FUSE has unequivocably demonstrated that Herbig Ae stars closely resemble T Tauri stars while actively accreting. Absorption-line studies of ZAMS A stars have revealed the presence of planetesimals in the disks, including icy bodies up to 20 AU from the star. Most importantly, FUSE constrains the epoch of gaseous giant planet formation to be ≤12 Myr both for A stars and for M stars. With the recognition, and dating of additional debris disks in our immediate vicinity, FUSE is poised to extend these studies to additional intermediate-mass stars and to nearby, post-T Tauri stars. |
|
|
|
|
|
