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| EPoS Contribution |
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Star formation in the light of the two cluster sequences
Susanne Pfalzner University Cologne, Cologne, Germany | |
| Recently a new analysis of cluster observations in the Milky Way found evidence that clustered star formation may work under tight constraints with respect to cluster size and density, implying that only two sequences exist. For the extragalactic young stellar clusters the overall trend in the cluster-density scaling is comparable to the relation obtained for Galactic clusters. So it seems that this might be universal for all star formation environments. The younger still embedded clusters are not located on the main evolutionary sequence but form their own side-arm off the leaky cluster sequence below its extension to younger ages. It joins up when the embedded clusters become exposed after having reached a size of ~2-4 pc at an age of >1 Myr. It will be presented what one can learn about star formation history from these sequences. | |
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| Caption: Cluster density as a function of cluster size for clusters more massive than 10^3 Msun including embedded clusters with more than observed 200 members. | |
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Key publication
Suggested Session: Cores and Collapse, Early Phases of Disks, Massive Stars | |