A spectroscopic event of η Car viewed from different directions: The data and first results

摘要: We present spectroscopic observations with high spectral resolution of η Car as seen by the SE lobe Homunculus nebula over 2003.5 "spectroscopic event". The observed spectra represent stellar spectrum emitted near pole star and are much less contaminated nebular emission lines than direct central object. "event" is qualitatively similar to what in (more equator-on at 45 ◦ ), but shows interesting differences. show that equivalent width changes Hα other pronounced line sight. Also absorption components appear variable. A high-velocity event He  indicating a mass-ejection event. This feature also seen, pronounced, hydrogen lines. λ4686 for brief period time appears, if corrected light travel time, precede view. Our indicate probably not only change ionization excitation structure or simple eclipse-like