High Dispersion Study of Two T Tauri Stars: RU Lupi and Cod-34 7151
Abstract
High dispersion, short wavelength IUE spectra with exposure times of 16 hours or more are sought for the two T Tauri stars which are brightest in the ultraviolet, RU Lupi and CoD-34 7151. These spectra will provide vital information on emission line profiles and widths for resonance and intersystem lines formed at temperatures between 2xlO^4 and 2xlO^5 K. These data can then be used to examine the energy deposition processes present in the chromospheres and transition regions of these stars. In particular, the Alfven wave-powered wind-outflow model proposed by Lago (1979, 1982) can be tested in terms of its proposed velocity and density structure. The relative importance of turbulence, opacity and Doppler shifts in an outflowing wind as line broadening mechanisms will be investigated for these stars. Low resolution IUE spectra of T Tauri stars indicate that RU Lupi and CoD-34 7151 are the only members of this class for which such observations are possible with IUE.
- Publication:
-
IUE Proposal
- Pub Date:
- 1983
- Bibcode:
- 1983iue..prop.1483L