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- W1672131805 abstract "Abstract. We developed a time-dependent multicomponent hydrodynamicscode for the simulation of stellar winds from hot stars and applied it to samplestars. 1. Simulation of multicomponent stellar windOne of the major aproximations of CAK theory (Castor, Abbott, & Klein 1975)is the one component fluid aproximation. But in fact, the radiative line forceacts on ions only, which share their momenta through Coulomb collisions withprotons that make up the bulk part of the plasma. The dynamical effect ofCoulomb collisions on the plasma is well described by dynamical friction, as wasderived by Spitzer (1956).We numerically solve the time-dependent hydrodynamic equations for amulticomponent, radiatively driven flow (Pauldrach et al. 1986). As a first test,we applied our code for cases where a well-coupled wind is expected. Morespecifically, we perform tests for stars with basic parameters corresponding toκ Cas and τ Sco.We summarize our model parameters in the Table1. For each star we com-pare resultsof the two-component simulation with the one-component simulation(see Fig.1)." @default.
- W1672131805 created "2016-06-24" @default.
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- W1672131805 date "2008-04-01" @default.
- W1672131805 modified "2023-09-27" @default.
- W1672131805 title "Multicomponent Stellar Wind of Hot Stars" @default.
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