The Long Period K + Be Binary HR 2577 (MWC 827)
Parsons, Sidney B.; Dempsey, Robert C.; Bopp, Bernard W.
South Africa, United States
Abstract
New spectroscopic observations near Hα and Na I D, along with ultraviolet IUE scans, have been obtained for the K+Be composite system HR 2577. High-precision radial-velocity measures do not support the suggested 58-year orbit of Hendry (1982). The Hα emission from the Be component undergoes considerable variations typical of its class. The presence of a λ6707 Li I feature as well as the IUE observations support the idea that little or no interaction between the binary components of HR 2577 is taking place.