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4 papers
The Influence of Triaxial Halos on Collisionless Galactic Disks
Jeremy L. Tinker, Barbara S. Ryden
We investigate the effect of rotating, triaxial halos on disk galaxies through an extensive set of numerical N-body simulations. Our simulations use a rigid potential field for the…
The Shapes of Galaxies in the Sloan Digital Sky Survey
S. M. Khairul Alam, Barbara S. Ryden
We estimate the distribution of apparent axis ratios for galaxies in the Sloan Digital Sky Survey (SDSS) Early Data Release. We divide the galaxies by profile type (de Vaucoule…
From Correlations of Galaxy Properties to the Physics of Galaxy Formation: A Theoretical Framework
Alberto Conti, Barbara S. Ryden, David H. Weinberg
(Abridged) Motivated by forthcoming data from the Sloan Digital Sky Survey, we present a theoretical framework that can be used to interpret Principal Component Analysis (PCA) of d…
The Shapes of Elliptical Galaxies with Central Density Cusps and Massive Dark Objects
Barbara S. Ryden
For a sample of 22 core ellipticals and 22 power law ellipticals, I examine the apparent axis ratios of isophotes as a function of the dynamical time at the isophote's mean radius.…