Scaling Mass Profiles around Elliptical Galaxies Observed with<i>Chandra</i>and<i>XMM‐Newton</i>
Scaling Mass Profiles around Elliptical Galaxies Observed with<i>Chandra</i>and<i>XMM‐Newton</i>
We investigated the dynamical structure of 53 elliptical galaxies using the Chandra archival X-ray data. In X-ray-luminous galaxies, temperature increases with radius and gas density is systematically higher at the optical outskirts, indicating the presence of a significant amount of the group-scale hot gas. In contrast, X-ray-dim galaxies show a …