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Disentangling age and metallicity in distant unresolved stellar systems

We present some results of an observational and theoretical study on unresolved stellar systems based on the Surface Brightness Fluctuations (SBF) technique. It is shown that SBF magnitudes are a valuable tracer of stellar population properties, and a reliable distance indicator. SBF magnitudes, SBF-colors, and SBF-gradients can help to constrain within relatively narrow limits the metallicity and age of the dominant stellar component in distant stellar systems, especially if coupled with other spectro-photometric indicators.

preprint2008arXivOpen access
M. CantielloE. BrocatoG. Raimondo
astro-ph
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Open access3 authors1 topic
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M. CantielloE. BrocatoG. Raimondo

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