The galactic disk thickness and the mass of the spherical component

2003/06/10 by D. Bizyaev, A. Khoperskov, Bizyaev, D. +3
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0306193

6 pages, 2 postscript figures. The poster was presented at the AAS meeting 202 (2003)

arxiv created 2003/06/10 · arxiv updated 2009/12/01

Abstract

We present results of numerical modeling made for the galactic stellar disk embedded in the spherical halo. The non-linear dynamics of bending instabilities developed in the disk is studied. The axisymmetrical bending mode is considered as a main factor increasing the disk thickness. The model dependence between the disk thickness and the halo to disk mass ratio M_h/M_d is inferred. The modeling results enable us to estimate the dark halo mass for several edge-on galaxies. The obtained values of M_h/M_d for the galaxies considered are of order 1 - 2.

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