The far-UV spectrum of the T Tauri star RU Lupi.
Liseau, R.; Gahm, G. F.; Fredga, K.; Dravins, D.
Sweden
Abstract
The spectrum of the T Tauri star RU Lupi from 1150 to 3100 A has been observed from the IUE satellite. It is rich in emission lines, seen superimposed on a background continuum and traceable from Ly-alpha to 3100 A. The region from 2000 to 3100 A is dominated by metal line emission of the same nature as previously observed in the optical region. The resonance lines of Mg II at 2795 and 2780 A are exceedingly strong. In the region from 1150 to 2000 A the most conspicuous features are the very strong emission lines of C IV, Si IV and Si III, indicating that regions of very high temperature (50,000 to 100,000 K) exist around the star.