Enhanced Activity in Close T Tauri Binaries
| Autor: | G. F. Gahm |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Physics
Brown dwarf Astronomy Astronomy and Astrophysics Astrophysics Cosmology T Tauri star Stars Space and Planetary Science Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Emission spectrum Circular orbit Circumbinary planet Astrophysics::Galaxy Astrophysics Line (formation) |
| Zdroj: | Astrophysics and Space Science. 304:149-152 |
| ISSN: | 1572-946X 0004-640X |
| DOI: | 10.1007/s10509-006-9097-9 |
| Popis: | The number of confirmed and suspected close T Tauri binaries (period days) is increasing. We discuss some systems with enhanced emission line activity and periodic line profile changes. Non-axisymmetric flows of plasma in the region between the circumbinary disk and the stars can be generated through the influence of the secondary component. Such enhanced activity is found around binaries with eccentric as well as circular orbits. We discuss our observations of the T Tauri stars RW Aurigae A and RU Lupi, which may host very close brown dwarf companions. Model simulations indicate that non-axisymmetric flows are generated around close binaries with circumbinary disks, also in systems with circular orbits. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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