Volume 402, Number 2, May I 2003
|Page(s)||531 - 539|
|Section||Galactic structure, stellar clusters, and populations|
|Published online||14 April 2003|
Projected properties of a family of triaxial mass models: High-order residuals
School of Studies in Physics, Pt. Ravishankar Shukla University, Raipur 492 010, India
Corresponding author: D. K. Chakraborty, email@example.com
Accepted: 18 February 2003
A family of triaxial mass models is described, for which the projected surface density can be calculated analytically, and can show ellipticity variations, isophote twists and high-order residuals. These can be compared with observations. These models are flattened versions of the γ-model with density and the modified Hubble model with density profile , and are constructed by addition of five spherical harmonic terms to the spherical models. The potential of the models can be expressed in a simple form.
Key words: galaxies: photometry / galaxies: structure
© ESO, 2003
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