New activity in the large circumstellar disk of the Be-shell star 48 Librae
New activity in the large circumstellar disk of the Be-shell star 48 Librae
Spectroscopic, polarimetric, and high spectral resolution interferometric data covering the period 1995-2011 are analyzed to document the transition into a new phase of circumstellar disk activity in the classical Be-shell star 48 Lib. The long-term disk evolution is described using the V/R ratio of the violet and red emission components …