The gaseous haloes of disc galaxies

Details The gaseous haloes of disc galaxies The gaseous haloes of disc galaxies

2005-10-26

arxiv.org/abs/astro-ph/0510734v1

Astronomy and Astrophysics

Astrophysics

6 pages, 2 figures; to appear in the proceedings of the Island Universes conference held in Terschelling, Netherlands, July 20

Scientific paper

The study of gas outside the plane of disc galaxies is crucial to understanding the circulation of material within a galaxy and between galaxies and the intergalactic environment. We present new HI observations of the edge-on galaxy NGC891, which show an extended halo component lagging behind the disc in rotation. We compare these results for NGC891 with other detections of gaseous haloes. Finally, we present a dynamical model for the formation of extra-planar gas.

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