Formation of Gaseous Shells
Astrophysics
2007-05-23 v1
Abstract
HI observations have revealed in several shell galaxies the presence of gaseous shells slightly displaced from the stellar shells radially, in the outward direction. We propose a mechanism to form this gaseous shells, based on the well-known phase-wrapping process of the companion matter in a merger, with nearly radial orbits. The mechanism relies on the existence of a clumpy interstellar matter, and on dynamical friction experienced by the companion core.
Cite
@article{arxiv.astro-ph/9908162,
title = {Formation of Gaseous Shells},
author = {F. Combes and V. Charmandaris},
journal= {arXiv preprint arXiv:astro-ph/9908162},
year = {2007}
}
Comments
2 pages, 1 figure, in "Galaxy Dynamics: from the Early Universe to the Present", ASP Conf Series, ed. F. Combes, G. Mamon, V. Charmandaris