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Numerical calculations of the structure of accretion shocks in T Tauri stars (TTSs) indicate that the C III]1909, O III]1661+1666 and Si III]1892 ultraviolet lines should have comparable intensities. We show how the density and the velocity of t[...]texto impreso
Using the archival spectrograms, obtained by IUE in 1980s, the line profiles of the CIII, CIV, SiIII, SiIV ions were studied in the spectra of four T Tau-type stars: RU Lup, T Tau, TW Hya, and DR Tau. The lines, reliably detected above the noise[...]texto impreso
Pre-main sequence stars are bright UV (UV) sources compared with their main sequence analogues. The source of this excess is the high energy processes associated with the physics of accretion/outflow during early stellar evolution. In this revie[...]texto impreso
Using the accretion shock wave model (Lamzin 1998), we calculate the relative intensities of the strongest intercombination lines in the range 1200-2000 Angstrom. We make a qualitative comparison of theoretical spectra with IUE low-resolution (s[...]
