Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Parametrization of the Galactic Structure by two exponentials   We parametrized the total structure of the Galaxy in cylindrical coordinates
by radial and vertical exponentials up to z=10 kpc, covering thin disc, thick
disc, and the inner spheroid. However, we let the scaleheight and scalelength
to be a continuous function of distance from the Galactic plane. The standard
deviations for the differences between the space densities estimated by means
of the newly defined scaleheight and scalelength and the observed space
densities for three absolute magnitude intervals, 5<M(g)<=6, 6<M(g)<=7, and
7<M(g)<=8, for the fields SA 114, ELAIS, and #0952+5245 are rather small. The
uncertainties for the scaleheight are also small, indicating that this
parameter is very sensitive to the distance from the Galactic plane, whereas
those for the scalelength are larger.

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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
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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: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg