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The Orbit of T Tauri South

Published online by Cambridge University Press:  09 August 2007

Rainer Köhler  and
Thorsten Ratzka
Rainer Köhler
Affiliation:
Sterrewacht Leiden, P.O. Box 9513, NL-2300 RA Leiden, The Netherlands email: [email protected]
Thorsten Ratzka
Affiliation:
Max-Planck-Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany email: [email protected]
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Abstract

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We report on previously unpublished diffraction-limited NIR observations of the young binary star T Tauri South. Orbital elements have been estimated by a least–squares fit to the relative positions. Although the parameters are not well constrained by the observations, we can derive a minimum system mass of about 3 M⊙.

With the most recent astrometric measurements by Duchêne et al. (2006), hyperbolic (unbound) orbits can be excluded with high confidence. We conclude that T Tauri Sb is not in the process of being ejected from the system.

Keywords

techniques: high angular resolutionastrometrybinaries: closestars: fundamental parameters (masses)stars: individual (T Tau)stars: pre–main-sequence
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S240: Binary Stars as Critical Tools & Tests in Contemporary Astrophysics , August 2006 , pp. 571 - 574
Copyright
Copyright © International Astronomical Union 2007

References

Beck, T.L., Schaefer, G.H., Simon, M., Prato, L., Stoesz, J.A., & Howell, R.R. 2004, ApJ 614, 235 Google Scholar
Duchêne, G., Ghez, A.M., & McCabe, C. 2002, ApJ 568, 771 Google Scholar
Duchêne, G., Ghez, A.M., McCabe, C., & Ceccarelli, C. 2005, ApJ 628, 832 CrossRefGoogle Scholar
Duchêne, G., Beust, H., Adjali, F., Konopacky, Q.M., & Ghez, A.M. 2006, A&A, astro-ph/0608018Google Scholar
Dyck, H.M., Simon, T., & Zuckerman, B. 1982, ApJ 255, L103 CrossRefGoogle Scholar
Furlan, E., Forrest, W.J., Watson, D.M., Uchida, K.I., Brandl, B.R., Keller, L.D., & Herter, T.L. 2003, ApJ 596, L87 Google Scholar
Köhler, R., Kasper, M.E., & Herbst, T.M. 2000, in: B. Reipurth & H. Zinnecker (eds.), Poster Papers, IAU Symp. 200, The Formation of Binary Stars, (San Francisco: ASP), p. 63Google Scholar
Köhler, R. & Ratzka, Th. 2007, in preparationGoogle Scholar
Koresko, C.D. 2000, ApJ 531, L147 Google Scholar
Loinard, L., Rodríguez, L.F., & Rodríguez, M.I. 2003, ApJ 587, L47 Google Scholar
Loinard, L., Mioduszewski, A.J., Rodríguez, L.F., et al. 2005, ApJ 619, 179 Google Scholar
Mayama, S., Tamura, M., Hayashi, M., et al. 2006, PASJ 58, 375 CrossRefGoogle Scholar
Press, W.H., Teukolsky, S.A., Vetterling, W.T., & Flannery, B.P. 1992, Numerical Recipes in C, 2nd EditionGoogle Scholar