The determination of mass of stellar disks of galaxies from the kinematic data

Details The determination of mass of stellar disks of galaxies from the kinematic data The determination of mass of stellar disks of galaxies from the kinematic data

2000-12-15

arxiv.org/abs/astro-ph/0012339v1

Paper presented at conference "Stellar Dynamics: from classic to modern", Sobolev institute, Saint Petersburg State University

Astronomy and Astrophysics

Astrophysics

8 pages including 4 PostScript figures

Scientific paper

Different ways of the determination of masses of galactic disks, based on the kinematic data, are briefly discussed. The analysis of the rotation curves which reach maximum inside of a disk, and N-body modeling, reproducing the rotation curves and stellar velocity dispersion of real galaxies, enable to conclude that the mass of a disk is usually significantly less than the total mass of spherical components (bulge + dark halo) inside of optical borders of a galaxy, although the exceptions also exist.

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