|
|||||
|
|
Rotation of Jets From T-Tauri Stars: New Clues From HST/STIS Observations |
|
| Authors: | D Coffey F Bacciotti J Woitas TP Ray J Eislöffel |
| Institution: | 1. Dublin Institute for Advanced Studies, Dublin, Ireland 2. Osservatorio Astrofisico di Arcetri, Firenze, Italy 3. Thüringer Landessternwarte Tautenburg, Tautenburg, Germany |
| Abstract: | Whether jets from newly forming stars rotate is a fundamental question in star formation research. Theoretical models propose jet rotation as a means of removing angular momentum from the young star and disk system, thus allowing accretion. While widely accepted, this idea has not yet been tested observationally due to the high resolution requirement of examining jets close to their launching point. Previous findings from the Hubble Space Telescope Imaging Spectrograph (HST/STIS) and Owens Valley Radio Observatory (OVRO) give indications of same rotation of the jet and disk respectively, of T Tauri star DG Tau. We report preliminary findings from STIS data for 3 of 8 sources in a current survey to establish conclusively whether protostellar jets rotate. The results were positive, yielding evidence of radial velocity differences about the axis at the base of all three jets of 10–25 km s?1. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |