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Origin of Star-to-Star Abundance Inhomogeneities in Star Clusters

Published online by Cambridge University Press:  01 June 2008

Jan Palouš ,
Richard Wünsch ,
Guillermo Tenorio-Tagle  and
Sergyi Silich
Jan Palouš
Affiliation:
Astronomical Institute, Academy of Sciences of the Czech Republic, Boční 1401, 140 31 Prague 4, Czech Republic email: palous@ig.cas.cz
Richard Wünsch
Affiliation:
Cardiff University, Queens Buildings, The Parade, Cardiff, CF24 3AA, United Kingdom email: richard@wunsch.cz
Guillermo Tenorio-Tagle
Affiliation:
Instituto Nacional de Astrofí sica Optica y Electronica, AP 51, 72000 Puebla, México email: gtt@inaoep.mx, silich@inaoep.mx
Sergyi Silich
Affiliation:
Instituto Nacional de Astrofí sica Optica y Electronica, AP 51, 72000 Puebla, México email: gtt@inaoep.mx, silich@inaoep.mx
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Abstract

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The mass reinserted by young stars of an emerging massive compact cluster shows a bimodal hydrodynamic behaviour. In the inner part of the cluster, it is thermally unstable, while in its outer parts it forms an out-blowing wind. The chemical homogeneity/inhomogeneity of low/high mass clusters demonstrates the relevance of this solution to the presence of single/multiple stellar populations. We show the consequences that the thermal instability of the reinserted mass has to the galactic super-winds.

Keywords

Galaxy: abundancesGalaxy: Globular clusters: generalGalaxy: open star clusters and associations: generalgalaxies: star clustersgalaxies: starburst

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