Correlated projected properties of triaxial mass models

Astronomy and Astrophysics – Astronomy

Scientific paper

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Galaxies: Elliptical, Galaxies: Structure

Scientific paper

Triaxial mass models producing ellipticity variations and isophote twists are investigated. The spherical mass distributions are made triaxial by adding two more terms, each consisting of a radial function muliplied by a low order spherical harmonic. Modified Hubble mass model and ?-models of Dehnen are investigated. It is found that the projected properties are correlated when a model with a given set of intrinsic parameters, is viewed in all possible orientations. We propose that these correlation patterns carry the signature of intrinsic shape parameters of the triaxial mass model.

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