Other
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102..882s&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 102, Sept. 1991, p. 882-892.
Other
42
Elliptical Galaxies, Galactic Rotation, Maximum Entropy Method, Radial Velocity, Dynamic Models, Self Consistent Fields, Velocity Distribution
Scientific paper
A family of self-consistent maximum entropy dynamical models is presented for the triaxial 'perfect ellipsoids'. These models are projected in different viewing geometries to explore the possible morphologies of the 2D radial-velocity fields of elliptical galaxies. It is found that, typically, about half the time an 'ordinary' velocity field is seen with a mixture of major- and minor-axis rotation. For other lines of sight, the velocity fields are more complicated, showing multiple peaks, steep gradients, strongly twisted contours, or kinematically distinct or counter-rotating cores. The origin of each of these velocity field morphologies is explained in terms of competing contributions from the major families of tube orbits.
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