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Enhanced Activity in Close T Tauri Binaries
Stockholm University, Faculty of Science, Department of Astronomy.
2006 (English)In: Astrophysics and Space Science, ISSN 0004-640X, Vol. 304, no 1-4, 149-152 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2006. Vol. 304, no 1-4, 149-152 p.
Keyword [en]
pre-main-sequence stars, T Tauri stars, close binaries
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:su:diva-20163DOI: doi:10.1007/s10509-006-9097-9OAI: diva2:186688
Available from: 2007-02-27 Created: 2007-02-27 Last updated: 2011-01-11Bibliographically approved

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Gahm, Gösta
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Department of Astronomy
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