On the origin of the compact H ii regions around massive stellar clusters

Details On the origin of the compact H ii regions around massive stellar clusters On the origin of the compact H ii regions around massive stellar clusters

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ap%26ss.324..215s&link_type=abstract

Astrophysics and Space Science, Volume 324, Issue 2-4, pp. 215-217

Astronomy and Astrophysics

Astrophysics

Galaxies: Star Clusters, Ism: Kinematics And Dynamics, Individual: M82-A1

Scientific paper

The existence of compact H ii regions around massive stellar clusters with ages exceeding several Myr challenges our understanding of the physical processes occurring inside such clusters, and their impact on the interstellar medium of the host galaxy. Here, we summarize our recent results dealing with the hydrodynamics of matter ejected by massive stars inside the cluster and show that compact H ii regions found around some massive clusters may indicate that these are evolving in a bimodal hydrodynamic regime. The latter is characterized by the accumulation of the injected matter in the central, thermally unstable zone, and by the ejection of mass supplied by massive stars in the outer regions of the cluster.

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