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Paper: Small Magellanic Cloud Be Stars: Color-magnitude Relations and Mass-Loss
Volume: 388, Mass Loss from Stars and the Evolution of Stellar Clusters
Page: 163
Authors: de Wit, W.J.; Lamers, H.J.G.L.M.; Marquette, J.B.; Beaulieu, J.P.
Abstract: We present an analysis of optical lightcurves of Small Magellanic Cloud (SMC) Be-type stars. Observations show that (1) optical excess flux is correlated with near-IR excess flux indicating a similar mechanism and (2) the lightcurves can trace out “loops” in a colour-magnitude diagram. A simple model for the time dependence of bound-free and free-free (bf-ff) emission produced by an outflowing circumstellar disk gives reasonable fits to the observations.
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