Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolutionary stellar population synthesis at 2A spectral resolution   We present an evolutionary stellar population synthesis model which predicts
SED's for simple stellar populations, SSP's, at ~2A resolution in the visible.
The input database is composed of ~550 stars, selected from the spectral
library of Jones. This is the first time that an evolutionary model employs
such an extensive empirical stellar spectral library, at such high resolution.
A SSP spectral library with -0.7<[Fe/H]<+0.2 is provided, as well as an
extensive discussion about the Lick system of indices at intermediate
resolution, showing the advantages of using the new model predictions. It is
shown the Rose indices, at higher resolution, as a function of the age and
metallicity of the stellar population. The SSP spectra, with flux-calibrated
response curve, can be smoothed to the same resolution of the data, or to the
galaxy internal velocity dispersion, allowing us to analyze the observed
spectrum in its own system. Therefore we are able to utilize all the
information contained in the data, at their spectral resolution. After
performing this step, the entire observational spectrum can be compared at
once, or the analysis can be done measuring a particular set of features in the
two, the synthesized and the observational spectrum, rather than trying to
correct the latter from broadening or instrumental effects. The SSP spectra
were calibrated with two metal-rich GC's, 47Tuc and NGC 6624, providing
excellent fits and being able to detect well known spectral peculiarities such
as 47Tuc CN anomaly. The model was confronted to an early-type galaxy, NGC
3379, revealing its well known Mg/Fe over-abundance, and showing how
appropriate are the new model predictions, as well as the way in which they can
be used, for studying elemental ratios in these systems.

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The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
2
The categories of this paper are: math
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
5
The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: comp-gas