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| DOI | 10.1088/0004-637X/760/1/88 | ||||
| Año | 2012 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
We present findings for DoAr 24E, a binary system that includes a classical infrared companion. We observed the DoAr 24E system with the Spitzer Infrared Spectrograph (IRS), with high-resolution, near-infrared spectroscopy of CO vibrational transitions, and with mid-infrared imaging. The source of high extinction toward infrared companions has been an item of continuing interest. Here we investigate the disk structure of DoAr 24E using the column densities, temperature, and velocity profiles of two CO absorption features seen toward DoAr 24Eb. We model the spectral energy distributions found using T-ReCS imaging and investigate the likely sources of extinction toward DoAr 24Eb. We find the lack of silicate absorption and small CO column density toward DoAr 24Eb suggest that the mid-infrared continuum is not as extinguished as the near-infrared, possibly due to the mid-infrared originating from an extended region. This, along with the velocity profile of the CO absorption, suggests that the source of high extinction is likely due to a disk or disk wind associated with DoAr 24Eb.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Kruger, Andrew J. | Hombre |
Wilbur Wright Coll - Estados Unidos
Wilbur Wright College - Estados Unidos |
| 2 | Richter, Matthew J. | Hombre |
UNIV CALIF DAVIS - Estados Unidos
University of California, Davis - Estados Unidos |
| 3 | Seifahrt, Andreas | Hombre |
UNIV CHICAGO - Estados Unidos
The University of Chicago - Estados Unidos |
| 4 | Carr, John S. | Hombre |
USN - Estados Unidos
Naval Research Laboratory - Estados Unidos |
| 5 | Najita, Joan | Mujer |
Natl Opt Astron Observ - Estados Unidos
National Optical Astronomy Observatory - Estados Unidos |
| 6 | MOERCHEN, MARGARET MARIE | Mujer |
ESO - Chile
Leiden Observ - Países Bajos European Southern Observatory Santiago - Chile Leiden Observatory Research Institute - Países Bajos Observatorio Europeo Austral - Chile Sterrewacht Leiden - Países Bajos |
| 7 | Doppmann, Greg W. | Hombre |
WM Keck Observ - Estados Unidos
W. M. Keck Observatory - Estados Unidos |
| Fuente |
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| National Science Foundation |
| NASA |
| NASA through contract RSA |
| Directorate for Mathematical and Physical Sciences |
| Agradecimiento |
|---|
| We thank the anonymous reviewer for the constructive comments and suggestions. Support for this work was provided by the National Science Foundation under grant No. AST-0708074, and by NASA through contract RSA No. 1346810, issued by JPL/Caltech. This work is based on observations made with the Spitzer Space Telescope and Gemini Observatory. The Spitzer Space Telescope is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. The Gemini Observatory is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the Science and Technology Facilities Council (United Kingdom), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), Ministerio da Ciencia e Tecnologia (Brazil), and Ministerio de Ciencia, Tecnologia e Innovacion Productiva (Argentina). This work was also based on observations made with ESO Telescopes at the La Silla Paranal Observatory under program ID 179.C-0151, and made use of the SIMBAD database, operated at CDS, Strasbourg, France. |