Synthesis of composite stellar populations models
نویسندگان
چکیده
منابع مشابه
Revisiting and assessing uncertainties in stellar populations synthesis models
In this review we address the uncertainties implicit in evolutionary synthesis model computations. After describing the general structure of synthesis codes, we discuss several source of uncertainties that may affect their results. In particular, we discuss the uncertainties arising in the computation of isochrones from evolutionary tracks; those related to atmosphere models; those that are a c...
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With a chemically consistent evolutionary synthesis approach we follow the enrichment of individual chemical elements in the ISM. We describe the time evolution of broad band colors U to K and metal indices (Fe5335, Fe5270, Mg2, Mgb), taking into account the increasing initial metallicities of successive generations of stars. Using specific star formation prescriptions for the different spectra...
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The theoretical relation between the number of post main sequence stars from stellar populations and their total mass is investigated. This is used to derive some basic relations between the stellar number counts of stellar populations with an age spread and the star formation history which produced them. The main purpose of this investigation is to offer a guideline for the construction of sim...
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The distribution of stellar masses that form together, the initial mass function (IMF), is one of the most important astrophysical distribution functions. The determination of the IMF is a very difficult problem because stellar masses cannot be measured directly and because observations usually cannot assess all stars in a population requiring elaborate bias corrections. Nevertheless, impressiv...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2009
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921310003133