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A probabilistic formulation of evolutionary synthesis models: implications for SED fittings

Published online by Cambridge University Press:  01 December 2006

M. Cerviño  and
V. Luridiana
M. Cerviño
Affiliation:
Instituto de Astrofísica de Andalucía (IAA-CSIC), Camino bajo de Huétor 50, 18008Spain email: mcs@iaa.es, vale@iaa.es
V. Luridiana
Affiliation:
Instituto de Astrofísica de Andalucía (IAA-CSIC), Camino bajo de Huétor 50, 18008Spain email: mcs@iaa.es, vale@iaa.es
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Abstract

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Evolutionary synthesis models (ESM) have been extensively used to obtain the star formation history in galaxies by means of SED fitting. Implicit in this use of ESM is that (a) for given evolutionary parameters, the shape of the SED is fixed whatever the size of the observed cluster (b) all regions of the observed SED have the same weight in the fit. However, Nature does not follow these two assumptions, as is implied by the existence of Surface Brightness Fluctuations in galaxies and as can be shown by simple logical arguments.

Keywords

Galaxies: stellar content
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S241: Stellar Populations as Building Blocks of Galaxies , December 2006 , pp. 169 - 170
Copyright
Copyright © International Astronomical Union 2007

References

Cervino, M. no, M. & Luridiana, V. 2006, A&A 451, 475Google Scholar