| Autor(es): |
Wheelwright, H. E.
;
Bjorkman, J. E.
;
Oudmaijer, R. D.
;
Carciofi, A. C.
;
Carciofi, AC
;
Rivinius, T
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CIRCUMSTELLAR DYNAMICS AT HIGH RESOLUTION; v. 464, p. 3-pg., 2012-01-01. |
| Resumo | |
To understand what processes result in the creation of Be star disks, and how angular momentum is transported within them, their kinematics and physical properties must be constrained. This requires comparing high spatial and spectral resolution data with detailed radiative transfer modeling. We present a high spectral resolution, R similar to 80 000, sub milli-arcsecond precision, spectroastrometric study of the circumstellar disks around Be stars. Kinematical modeling demonstrates that only Keplerian disks can recreate the observed spectroastrometric signatures. Focusing on beta CMi, the data are confronted with a three-dimensional, NLTE radiative transfer model to directly constrain the properties of its disk. We demonstrate that the observed SED, polarization and spectroastrometric signature of beta CMi can be well reproduced by a model of a viscous disk. The agreement between the model and the extensive data-set confirms that the disks around Be stars are best modeled as viscous decretion disks in Keplerian rotation. (AU) | |
| Processo FAPESP: | 10/19029-0 - Modelos tridimensionais de transporte radiativo: uma ponte entre teoria e observações |
| Beneficiário: | Alex Cavaliéri Carciofi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |