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Paper: The Shapes of Elliptical Galaxies with Massive Dark Objects and Central Density Cusps
Volume: 182, Galaxy Dynamics: A Rutgers Symposium
Page: 142
Authors: Ryden, Barbara S.
Abstract: For a sample of 22 core ellipticals and 22 power law ellipticals, I examine the apparent axis ratios of isophotes as a function of dynamical time. The core galaxies are significantly rounder than the power law galaxies in the region where the dynamical time is short (~ 1 Myr). In the outer regions (tdyn > 10 {Myr}), the two types have indistinguishable shape distributions. The inner isophotes of core galaxies are consistent with their being randomly oriented oblate objects, with a peak intrinsic axis ratio of γ = 0.86. The outer regions of core galaxies are inconsistent with their being randomly oriented oblate or prolate objects.
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