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Title of Journal: Astrophys Space Sci

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Abbravation: Astrophysics and Space Science

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Springer Netherlands

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DOI

10.1007/bf01121769

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1572-946X

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A universal vertical stellar density distribution

Authors: S Karaali E Hamzaoğlu S Bilir
Publish Date: 2009/10/08
Volume: 324, Issue: 1, Pages: 23-
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Abstract

We reduced the observational logarithmic space densities in the vertical direction up to 8 kpc from the galactic plane for stars with absolute magnitudes 56 67 and 510 in the fields 0952+5245 and SA114 to a single exponential density law One of three parameters in the quadratic expression of the density law corresponds to the local space density for stars with absolute magnitudes in question There is no need of any definition for scaleheights or population types We confirm with the arguments of nondiscrete thin and thick discs for our Galaxy and propose a single structure up to several kiloparsecs from the galactic plane The logarithmic space densities evaluated by this law for the ELAIS field fit to the observational ones Whereas there are considerable offsets for the logarithmic space densities produced by two sets of classical galactic model parameters from the observational ones for the same field

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