English

Does a Galaxy Fly?

Astrophysics 2015-06-24 v1

Abstract

Disk galaxies in a cluster of galaxies are moving in hot gas filling the cluster. Generally, they are moving at transonic or supersonic velocities. If ram-pressure stripping is insufficient to destroy the gas disk, the galaxies should be affected by the wind of the surrounding hot gas similar to an airfoil. In this paper, I consider whether the aerodynamic interaction can be strong enough to force a disk galaxy to deviate from the orbit that it would have been in. I find that while the lift force is not effective, the drag force could affect face-on disk galaxies in poor clusters on long timescales.

Cite

@article{arxiv.astro-ph/0608350,
  title  = {Does a Galaxy Fly?},
  author = {Yutaka Fujita},
  journal= {arXiv preprint arXiv:astro-ph/0608350},
  year   = {2015}
}

Comments

Accepted for publication in PASJ