Tails of the Unexpected: The Interaction of an Isothermal Shell with a Cloud
Astrophysics of Galaxies
2015-05-20 v1 Cosmology and Nongalactic Astrophysics
Solar and Stellar Astrophysics
Abstract
A new mechanism for the formation of cometary tails behind dense clouds or globules is discussed. Numerical hydrodynamical models show that when a dense shell of swept-up matter overruns a cloud, material in the shell is focussed behind the cloud to form a tail. This mode of tail formation is completely distinct from other methods, which involve either the removal of material from the cloud, or shadowing from a strong, nearby source of ionization. This mechanism is relevant to the cometary tails seen in planetary nebulae and to the interaction of superbubble shells with dense clouds.
Keywords
Cite
@article{arxiv.1011.2638,
title = {Tails of the Unexpected: The Interaction of an Isothermal Shell with a Cloud},
author = {J. M. Pittard},
journal= {arXiv preprint arXiv:1011.2638},
year = {2015}
}
Comments
6 pages, 6 figures, accepted for publication in MNRAS letters