Projected properties of a family of triaxial mass models: High-order residuals

Details Projected properties of a family of triaxial mass models: High-order residuals Projected properties of a family of triaxial mass models: High-order residuals

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...402..531c&link_type=abstract

Astronomy and Astrophysics, v.402, p.531-539 (2003)

Astronomy and Astrophysics

Astrophysics

2

Galaxies: Photometry, Galaxies: Structure

Scientific paper

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 gamma -model with density rho (r) ~ r-gamma (b0+r)gamma -4 and the modified Hubble model with density profile rho (r) ~ (b02+r2)-3/2, 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.

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