On the self-consistency of evolutionary synthesis models

Details On the self-consistency of evolutionary synthesis models On the self-consistency of evolutionary synthesis models

2002-10-02

arxiv.org/abs/astro-ph/0210078v1

Astrophys.Space Sci. 284 (2003) 897-900

Astronomy and Astrophysics

Astrophysics

4 pages, to appear in "The Evolution of Galaxies III. From Simple Approaches to Self-consistent Models" G.Hensler et al. (eds.

Scientific paper

10.1023/A:1024070901054

Evolutionary synthesis models have been used to study the physical properties of unresolved populations in a wide range of scenarios. Unfortunately, their self-consistency are difficult to test and there are some theoretical open questions without an answer: (1) The change of the homology relations assumed in the computation of isochrones due to the effect of stellar winds (or rotation) and the discontinuities in the stellar evolution are not considered. (2) There is no a consensus about how the isochrones must be integrated. (3) The discreteness of the stellar populations (that produce an intrinsic statistical dispersion) usually are not taken into account, and model results are interpreted in a deterministic way instead a statistical one... The objective of this contribution is to present some inconsistencies in the computation and some cautions in the application of the results of such codes.

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