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| Paper: |
Mixture models for studying stellar populations |
| Volume: |
13, The Formation and Evolution of Star Clusters |
| Page: |
512 |
| Authors: |
Nemec, James; Nemec, Amanda F. L. |
| Abstract: |
Finite mixture models and their application to stellar populations are studied. Multivariate mixture models are defined and the relationships between two or more variables are examined by considering the conditional distribution of one set of variables given another. Emphasis is given to issues such as gradients within components and overall gradients, as well as selection effects. The insight provided by mixture models is illustrated in the specific cases of the W-(Fe/H) and the V(rot)-(Fe/H) relationships for nearby stars and the age-metallicity relationship. These examples are also used to illustrate the difference between one-component models, multicomponent models, and models with a continuum of stellar populations. |
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