Turbulence, mass loss and Hα emission by stochastic shocks in the hypergiant ρ Cassiopeiae.
The hypergiant ρ Cas is known for its variable rate of mass loss, with an average value of about 10^-5^Msun_/yr, and the supersonic value for the line-of-sight component of the microturbulent velocity, about 11km/s. Emission components in Hα suggest the presence of a thermally excited outer atmospheric region. Since hydrodynamical turbulence in a
de Jager, C. et al.
Fecha de publicación:
9
1997