Ellipsoidal mass models with varying axial ratios

Free access article

Issue		A&A Volume 423, Number 2, August IV 2004


Page(s)		501 - 505
Section		Extragalactic astronomy
DOI		http://dx.doi.org/10.1051/0004-6361:20040450

A&A 423, 501-505 (2004)
DOI: 10.1051/0004-6361:20040450

Ellipsoidal mass models with varying axial ratios

D. K. Chakraborty

School of Studies in Physics, Pt. Ravishankar Shukla University, Raipur 492 010, India
e-mail: ircrsu@sancharnet.in

(Received 16 March 2004 / Accepted 10 May 2004)

Abstract
A family of triaxial mass models is described, for which the density is stratified on coaxial ellipsoids with varying axial ratios. The contours of constant projected density are almost perfect ellipses with ellpticity variations and isophote twists, but with no significant high-order residuals. These models are generalization of the triaxial models of Stark. An application to a real galaxy is presented.

Key words: galaxies: photometry -- galaxies: structure -- galaxies: general

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