On the self-consistency of evolutionary synthesis models |
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Authors: | Miguel Cerviño |
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Institution: | (1) IAA (CSIC) Camino bajo de Huétor 24, Granada, 18008, Spain;(2) LAEFF (INTA) Apdo. 50727, Madrid, 28080, Spain |
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Abstract: | Evolutionary synthesis models have been used to study the physical properties of unresolved populations in a wide range of
scenarios. Unfortunately, their self-consistency is 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 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 of 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.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | Stars: evolution Galaxies: stellar content openclusters and associations: general |
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