The galactic disk thickness and the mass of spherical component.

Details The galactic disk thickness and the mass of spherical component. The galactic disk thickness and the mass of spherical component.

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...202.4013b&link_type=abstract

American Astronomical Society Meeting 202, #40.13; Bulletin of the American Astronomical Society, Vol. 35, p.758

Astronomy and Astrophysics

Astronomy

3

Scientific paper

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 Mh/M_d is inferred. The modeling results enables us to estimate the dark halo mass for several edge-on galaxies: UGC 6080, NGC 4738, UGC 9556, UGC 9422, NGC 5170, NGC 891, and UGC 8286. The obtained values of Mh/M_d for the galaxies considered are of order of 1 - 2.

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