Disentangling age and metallicity in distant unresolved stellar systems

Details Disentangling age and metallicity in distant unresolved stellar systems Disentangling age and metallicity in distant unresolved stellar systems

2008-12-23

arxiv.org/abs/0812.4368v1

Astronomy and Astrophysics

Astrophysics

A contributed paper to the Cefalu' (Italy) "Probing Stellar Populations out to the Distant Universe", 4 pages. To appear as an

Scientific paper

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.

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