Automatic Observation Rendering (AMORE) I. On a synthetic stellar population's colour-magnitude diagram

Abstract

A new method, AMORE - based on a genetic algorithm optimizer, is presented for the automated study of colour-magnitude diagrams. The method combines several stellar population synthesis tools developed in the last decade by or in collaboration with the Padova group. Our method is able to recover, within the uncertainties, the parameters -- distance, extinction, age, metallicity, index of a power-law initial mass function and the index of an exponential star formation rate -- from a reference synthetic stellar population. No a priori information is inserted to recover the parameters, which is done simultaneously and not one at a time. Examples are given to demonstrate and to better understand biases in the results, if one of the input parameters is deliberately set fixed to a non-optimum value.

26 pages LaTeX, 7 figures, 11 tables, to appear in A&A

References in corpus (3)

• Numerical Methods of Star Formation History Measurement and Applications to Seven Dwarf Spheroidals
• A Method for Determining the Star Formation History of a Mixed Stellar Population
• Old Stellar Populations of the Small Magellanic Cloud

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