The Millennium Outburst of the Cool Hypergiant Rho Cassiopeiae: Spectroscopy and Modeling

A. Lobel, A. K. Dupree, R. P. Stefanik +7

Between 2000 June and September an exceptional variability phase occurred in the peculiar F-type hypergiant Rho Cas, when the V-brightness dimmed by at least a full magnitude. The…