The Hot, Diffuse Gas in a Dense Cluster of Massive Stars

Details The Hot, Diffuse Gas in a Dense Cluster of Massive Stars The Hot, Diffuse Gas in a Dense Cluster of Massive Stars

Jun 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...536..896c&link_type=abstract

The Astrophysical Journal, Volume 536, Issue 2, pp. 896-901.

Astronomy and Astrophysics

Astronomy

78

Hydrodynamics, Shock Waves, Stars: Winds, Outflows

Scientific paper

We present an analytic model describing the ``cluster wind'' flow that results from the multiple interaction of the stellar winds produced by the stars of a dense cluster of massive stars. The analytic solution (obtained by matching an inner and an outer solution at the radius of the stellar cluster) can have asymptotically subsonic or supersonic behavior, the latter possibility being appropriate for the case of a cluster surrounded by a low-pressure environment. We also present a three-dimensional numerical simulation of such a cluster wind. We find that the behavior of the mean flow computed from the numerical simulation quite closely follows the flow properties deduced from the analytic model. Finally, we discuss the observational properties of the cluster wind produced by dense clusters such as the ``Arches'' cluster close to the center of our Galaxy. In particular, we predict that the X-ray emission from the intracluster gas in this stellar cluster could be detectable.

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