Gas Dynamic Stripping and X-Ray Emission of Cluster Elliptical Galaxies
Abstract
Detailed 3-D numerical simulations of an elliptical galaxy orbiting in a gas-rich cluster of galaxies indicate that gas dynamic stripping is less efficient than the results from previous, simpler calculations (Takeda et al. 1984; Gaetz et al. 1987) implied. This result is consistent with X-ray data for cluster elliptical galaxies. Hydrodynamic torques and direct accretion of orbital angular momentum can result in the formation of a cold gaseous disk, even in a non-rotating galaxy. The gas lost by cluster galaxies via the process of gas dynamic stripping tends to produce a colder, chemically enriched cluster gas core. A comparison of the models with the available X-ray data of cluster galaxies shows that the X-ray luminosity distribution of cluster galaxies may reflect hydrodynamic stripping, but also that a purely hydrodynamic treatment is inadequate for the cooler interstellar medium near the centre of the galaxy.
Keywords
Cite
@article{arxiv.astro-ph/0102204,
title = {Gas Dynamic Stripping and X-Ray Emission of Cluster Elliptical Galaxies},
author = {Thomas Toniazzo and Sabine Schindler},
journal= {arXiv preprint arXiv:astro-ph/0102204},
year = {2016}
}
Comments
44 pages (incl. 15 figures), accepted for publication in MNRAS