Effelsberg HI Survey of Compact High-Velocity Clouds
Astrophysics
2007-05-23 v1
Abstract
We studied 11 compact high-velocity clouds (CHVCs) in the 21-cm line emission of neutral hydrogen with the 100-m telescope in Effelsberg. We find that most of our CHVCs are not spherically-symmetric as we would expect in case of a non-interacting, intergalactic population. Instead, many CHVCs reveal a complex morphology suggesting that they are disturbed by ram-pressure interaction with an ambient medium. Thus, CHVCs are presumably located in the neighborhood of the Milky Way instead of being spread across the entire Local Group.
Keywords
Cite
@article{arxiv.astro-ph/0310247,
title = {Effelsberg HI Survey of Compact High-Velocity Clouds},
author = {T. Westmeier and C. Bruens and J. Kerp},
journal= {arXiv preprint arXiv:astro-ph/0310247},
year = {2007}
}
Comments
4 pages, 2 figures, to appear in the proceedings of the conference "Satellites and Tidal Streams", La Palma, Spain, 26-30 May 2003, eds. F. Prada, D. Martinez-Delgado, T. Mahoney