| Issue |
A&A
Volume 402, Number 2, May I 2003
|
|
|---|---|---|
| Page(s) | 531 - 539 | |
| Section | Galactic structure, stellar clusters, and populations | |
| DOI | https://doi.org/10.1051/0004-6361:20030280 | |
| 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, ircrsu@sancharnet.in
Received:
27
May
2002
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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