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http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1066| Two-dimensional hydrodynamic models of super star clusters with a positive star formation feedback | |
| GUILLERMO TENORIO TAGLE SERGIY SILICH | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| Using the hydrodynamic code ZEUS, we perform 2D simulations to determine the fate of the gas ejected by massive stars within super star clusters. It turns out that the outcome depends mainly on the mass and radius of the cluster. In the case of less massive clusters, a hot high-velocity (~1000 km sˉ¹) stationary wind develops and the metals injected by supernovae are dispersed to large distances from the cluster. On the other hand, the density of the thermalized ejecta within massive and compact clusters is sufficiently large as to immediately provoke the onset of termal instabilities. These deplete, particularly in the central densest regions, the pressure and the pressure gradient required to establish a stationary wind, and instead the thermally unstable parcels of gas are rapidly compressed, by a plethora of repressurizing shocks, into compact high-density condensations. Most of these are unable to leave the cluster volumen and thus accumulate to eventually feed further generations of star formation. The simulations cover an important fraction of the parameter space, which allows us to estimate the fraction of the reinserted gas that accumulates within the cluster and the fraction that leaves the cluster as a function of the cluster mechanical luminosity, the cluster size, and heating efficiency. | |
| The astrophysical journal | |
| 2008 | |
| Artículo | |
| Inglés | |
| Estudiantes Investigadores Público en general | |
| Wünsch, R., et al., (2008). Two-dimensional hydrodynamic models of super star clusters with a positive star formation feedback, The astrophysical journal, Vol.683(2):683-692 | |
| ASTRONOMÍA Y ASTROFÍSICA | |
| Versión aceptada | |
| acceptedVersion - Versión aceptada | |
| Aparece en las colecciones: | Artículos de Astrofísica |
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| 36_Two-Dimensional Hydrodynamic Models .pdf | 1.17 MB | Adobe PDF | Visualizar/Abrir |