The multi-gaussian expansion method: a tool for building realistic photometric and kinematical models of stellar systems II. Application to the central region of the Sombrero Galaxy (NGC 4594)

Details The multi-gaussian expansion method: a tool for building realistic photometric and kinematical models of stellar systems II. Application to the central region of the Sombrero Galaxy (NGC 4594) The multi-gaussian expansion method: a tool for building realistic photometric and kinematical models of stellar systems II. Application to the central region of the Sombrero Galaxy (NGC 4594)

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...285..739e&link_type=abstract

Astronomy and Astrophysics 285, 739-750 (1994)

Astronomy and Astrophysics

Astrophysics

27

Galaxies: Individual: Ngc 4594, Galaxies: Structure, Galaxies: Luminosity Function, Mass Function, Galaxies: Kinematics And Dynamics Of, Galaxies: Nuclei, Image Processing

Scientific paper

We have applied the Multi-Gaussian Expansion (MGE) technique for a photometric analysis of a new high resolution R' image of the central region of NGC 4594 (M 104). The deconvolved image reveals a nucleus offset by about 0.2 arcsec. from the bulge, and a bright unresolved nuclear disk. Oblate self-gravitating dynamical models have been derived, again using the MGE formalism described in Paper I, and compared to previously published mean velocity and velocity dispersion profiles. They imply a centrally condensed dark mass of about 1.0x10^9^ Msun_, and a tangentially anisotropic cold inner disk.

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