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Cyclic variability of the circumstellar disk of the Be star zeta Tauri II. Testing the 2D global disk oscillation model
| Indexado |
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| DOI | 10.1051/0004-6361/200810962 | ||||
| Año | 2009 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Abstract
Results. By adopting a viscous decretion disk model for zeta Tauri and a rigorous solution of the radiative transfer, a very good fit of the time-average properties of the disk was obtained. This provides strong theoretical evidence that the viscous decretion disk model is the mechanism responsible for disk formation. The global oscillation model successfully fitted spatially resolved VLTI/AMBER observations and the temporal V/R variations in the H alpha and Br gamma lines. This result convincingly demonstrates that the oscillation pattern in the disk is a one-armed spiral. Possible model shortcomings, as well as suggestions for future improvements, are also discussed.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Carciofi, A. C. | - |
UNIV SAO PAULO - Brasil
|
| 2 | Okazaki, Atsuo T. | Hombre |
Hokkai Gakuen Univ - Japón
Hokkai Gakuen University - Japón |
| 3 | MORALES-PERALTA, JUAN CARLOS | Hombre |
ESO - Chile
European Southern Observatory Santiago - Chile |
| 4 | Stefl, S. | - |
ESO - Chile
|
| 5 | Rivinius, Th | Hombre |
ESO - Chile
European Southern Observatory Santiago - Chile |
| 6 | Baade, D. | Hombre |
ESO - Alemania
Observatorio Europeo Austral - Alemania ESO - Chile |
| 7 | Bjorkman, J. E. | - |
Univ Toledo - Estados Unidos
|
| 8 | Hummel, Christian A. | Hombre |
ESO - Alemania
Observatorio Europeo Austral - Alemania ESO - Chile |
| Fuente |
|---|
| National Science Foundation |
| FAPESP |
| NSF |
| JSPS |
| University of Toledo |
| Brazilian agency FAPESP |
| Directorate for Mathematical and Physical Sciences |
| Agradecimiento |
|---|
| The authors are very grateful to the referee, Dr. Carol Jones, for her useful comments and detailed review of the manuscript. This work was supported by FAPESP grant 04/07707-3 to A.C.C., NSF grant AST-0307686 to the University of Toledo (J.E.B.) and JSPS grant 20540236 to A.T.O. Part of the calculations were carried out on the Itautec High Performance Cluster of the IAG/USP, whose purchase was made possible by the Brazilian agency FAPESP (grant 2004/08851-0). A.C.C. is grateful for the help of the technical computing staff of the Astronomy Departament of the IAG/USP. |
