Time Variability of Emission Lines for Four Active T Tauri Stars (I): October--December in 2010

摘要: We present optical spectrophotometric monitoring of four active T Tauri stars (DG Tau, RY XZ RW Aur A) at high spectral resolution ($R \ga 1 \times 10^4$), to investigate the correlation between time variable mass ejection seen in jet/wind structure driving source and accretion probed by emission lines. This may allow us constrain understanding launching mechanism, location region, physical link with magnetospheric accretion. In 2010, observations were made six different epochs how daily monthly variability might affect such a study. perform comparisons line profiles we observed those literature over period decades confirm presence separate from during our observations. is so far consistent idea that these have long term (3-20 years) related episodic suggested structures extended flow components. also correlations equivalent widths luminosities for find are paradigm steady regions close star.