Wind mass-loss rates in main-sequence B stars
| Authors | |
|---|---|
| Year of publication | 2014 |
| Type | Article in Proceedings |
| Conference | Putting A Stars into Context: Evolution, Environment, and Related Stars |
| MU Faculty or unit | |
| Citation | |
| Web | http://adsabs.harvard.edu/abs/2014psce.conf..250K |
| Field | Astronomy and astrophysics |
| Keywords | mass-loss; hot stars |
| Description | We calculate wind mass-loss rates in main-sequence B stars. The calculations are based on our radiatively-driven NLTE wind models. The main sequence mass-loss rate depends strongly on effective temperature. For the hottest B stars the mass-loss rate amounts to 1e-9 Mo/yr, while for the coolest ones it is lower by three orders of magnitude. Main sequence B stars with effective temperatures lower than about 15 000 K (i.e., later than spectral type B5) do not have a homogeneous line-driven wind. The wind mass-loss rate also strongly depends on the chemical composition; it may either increase or decrease with increasing abundances, depending on whether the emergent flux redistribution is significant or not. |
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