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Markov Chain Monte-Carlo Models of Starburst Clusters

Published online by Cambridge University Press:  23 January 2015

Jorge Melnick*
Affiliation:
European Southern Observatory email: [email protected]
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Abstract

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There are a number of stochastic effects that must be considered when comparing models to observations of starburst clusters: the IMF is never fully populated; the stars can never be strictly coeval; stars rotate and their photometric properties depend on orientation; a significant fraction of massive stars are in interacting binaries; and the extinction varies from star to star. The probability distributions of each of these effects are not a priori known, but must be extracted from the observations. Markov Chain Monte-Carlo methods appear to provide the best statistical approach. Here I present an example of stochastic age effects upon the upper mass limit of the IMF of the Arches cluster as derived from near-IR photometry.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2015 

References

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