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Radial velocity variations in the young eruptive star EX Lupi
| Indexado |
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| DOI | 10.1051/0004-6361/201322428 | ||||
| Año | 2014 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Abstract
Conclusions. We qualitatively discuss two possibilities to explain the RV data: a geometry with two accretion columns rotating with the star, and a single accretion flow synchronized with the orbital motion of the hypothetical companion; the second scenario is more consistent with the observed properties of EX Lup. In this scenario, the companion's mass would fall into the brown dwarf desert, which, together with the unusually small separation of 0.06 au would make EX Lup a unique binary system. The companion also has interesting implications on the physical mechanisms responsible for triggering the outburst.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Kóspál, Ágnes | Mujer |
European Space Agcy - Países Bajos
ESTEC - European Space Research and Technology Centre - Países Bajos |
| 2 | Mohler-Fischer, M. | - |
Max Planck Inst Astron - Alemania
|
| 3 | Sicilia-Aguilar, A. | Mujer |
UNIV AUTONOMA MADRID - España
Universidad Autónoma de Madrid - España |
| 4 | Abraham, P. | Hombre |
Hungarian Acad Sci - Hungría
Konkoly Observatory Hungarian Academy of Sciences - Hungría Magyar Tudomanyos Akademia - Hungría |
| 5 | CURE-OJEDA, MICHEL | Hombre |
Universidad de Valparaíso - Chile
|
| 6 | Henning, Thomas | Hombre |
Max Planck Inst Astron - Alemania
Max Planck Institute for Astronomy - Alemania |
| 7 | Kiss, Cs. | - |
Hungarian Acad Sci - Hungría
Konkoly Observatory Hungarian Academy of Sciences - Hungría Magyar Tudomanyos Akademia - Hungría |
| 8 | Launhardt, Ralf | Hombre |
Max Planck Inst Astron - Alemania
Max Planck Institute for Astronomy - Alemania |
| 9 | Moor, A. | Hombre |
Hungarian Acad Sci - Hungría
Konkoly Observatory Hungarian Academy of Sciences - Hungría Magyar Tudomanyos Akademia - Hungría |
| 10 | Mueller, Andre | Hombre |
ESO - Chile
European Southern Observatory Santiago - Chile Observatorio Europeo Austral - Chile |
| 10 | COSTA-DUARTE, M., V | Mujer |
European Southern Observatory Santiago - Chile
|
| Fuente |
|---|
| Ministerio de Economía y Competitividad |
| Ministerio de Ciencia e Innovación |
| Hungarian Scientific Research Fund |
| Spanish MICINN/MINECO |
| MICINN/MINECO |
| Agradecimiento |
|---|
| The authors thank the referee, D. Lorenzetti, for his comments that helped to improve the manuscript. The authors also thank V. Roccatagliata, and M. Fang for their help with the FEROS barycentric correction and A. Simon for his help with the bisector analysis. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. A.S.A. acknowledges support of the Spanish MICINN/MINECO "Ramon y Cajal" program, grant number RYC-2010-06164, and the action "Proyectos de Investigacion fundamental no orientada", grant number AYA2012-35008. This work was partly supported by the grant OTKA K101393 of the Hungarian Scientific Research Fund. |
| The authors thank the referee, D. Lorenzetti, for his comments that helped to improve the manuscript. The authors also thank V. Roccatagliata, and M. Fang for their help with the FEROS barycentric correction and A. Simon for his help with the bisector analysis. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. A.S.A. acknowledges support of the Spanish MICINN/MINECO “Ramón y Cajal” program, grant number RYC-2010-06164, and the action “Proyectos de Investigación fundamental no orientada”, grant number AYA2012-35008. This work was partly supported by the grant OTKA K101393 of the Hungarian Scientific Research Fund. |
