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| DOI | 10.3847/1538-4357/AB0E7D | ||||
| Año | 2019 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
We investigate the relationship between turbulence and feedback in the Orion A molecular cloud using maps of (CO)-C-12(1-0), (CO)-C-13(1-0), and (CO)-O-18(1-0) from the CARMA-NRO Orion survey. We compare gas statistics with the impact of feedback in different parts of the cloud to test whether feedback changes the structure and kinematics of molecular gas. We use principal component analysis, the spectral correlation function, and the spatial power spectrum to characterize the cloud. We quantify the impact of feedback with momentum injection rates of protostellar outflows and wind-blown shells as well as the surface density of young stars. We find no correlation between shells or outflows and any of the gas statistics. However, we find a significant anticorrelation between young star surface density and the slope of the (CO)-C-12 spectral correlation function, suggesting that feedback may influence this statistic. While calculating the principal components, we find peaks in the covariance matrix of our molecular line maps offset by 1-3 km s(-1) toward several regions of the cloud that may be produced by feedback. We compare these results to predictions from molecular cloud simulations.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Feddersen, Jesse R. | Hombre |
YALE UNIV - Estados Unidos
Yale University - Estados Unidos |
| 2 | Arce, Hector G. | Hombre |
YALE UNIV - Estados Unidos
Yale University - Estados Unidos |
| 3 | Kong, Shuo | - |
YALE UNIV - Estados Unidos
Yale University - Estados Unidos |
| 4 | Ossenkopf-Okada, Volker | Hombre |
Univ Cologne - Alemania
University of Cologne - Alemania Universität zu Köln - Alemania |
| 5 | Carpenter, John M. | Hombre |
Atacama Large Millimeter Array - Chile
Atacama Large Millimeter-submillimeter Array - Chile |
| Fuente |
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| National Science Foundation |
| University of Illinois at Urbana-Champaign |
| University of Chicago |
| California Institute of Technology |
| University of California-Berkeley |
| University of Maryland College Park |
| Directorate for Mathematical and Physical Sciences |
| Agradecimiento |
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| We thank the anonymous referee for their comments. We thank Yoshihiro Tanabe for providing the outflow catalog. We thank Jens Kauffmann, Jaime Pineda, and the entire CARMA-NRO Orion collaboration for helpful discussion. CARMA operations were supported by the California Institute of Technology, the University of California-Berkeley, the University of Illinois at Urbana-Champaign, the University of Maryland College Park, and the University of Chicago. The Nobeyama 45 m telescope is operated by the Nobeyama Radio Observatory, a branch of the National Astronomical Observatory of Japan. This project was supported by the National Science Foundation, award AST-1140063. |