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Multicomponent stellar wind from hot subdwarfs stars |
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| Authors: | V Votruba A Feldmeier J Krtička J Kubát |
| Institution: | 1. Astronomicky ústav, Akademie věd ?eské Republiky, 251 65, Ond?ejov, Czech Republic 3. ústav Teoretické Fyziky a Astrofyziky, P?írodověcká Fakulta, Masarykova Univerzita, Kotlá?ská 2, 611 37, Brno, Czech Republic 2. Astrophysik, Institut für Physik, Universit?t Potsdam, Am Neuen Palais 10, 14469, Potsdam, Germany |
| Abstract: | Stellar wind from hot subdwarf stars is mainly accelerated by the interaction of ultraviolet photospheric radiation with metals, mainly oxygen. Absorbing ions share momentum through Coulombic collisions with the remaining passive part of the plasma (namely protons). We found that in the case of the winds from hot subdwarfs, interactions could be so small that they stop the momentum transfer between the passive bulk of plasma and absorbing ions. As a result wind decouples at a certain point. |
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