ν Gem: A Hierarchical Triple System with an Outer Be Star
ν Gem: A Hierarchical Triple System with an Outer Be Star
Time series of spectroscopic, speckle-interferometric, and optical long-baseline-interferometric observations confirm that $\nu$ Gem is a hierarchical triple system. It consists of an inner binary composed of two B-type stars and an outer classical Be star. Several photospheric spectral lines of the inner components were disentangled, revealing two stars with very …