K.C. Freeman, PASA, 14 (1), 4.
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Intergalactic Clouds
The intergalactic HI clouds discovered so far are associated with individual or interacting galaxies, groups and clusters. They all have roughly similar sizes and HI masses. Here are some examples:
- The Leo group ring (Schneider 1989). Its diameter D is about 200 kpc and its HI mass M is M.
- The Virgo cloud (Giovanelli & Haynes 1989), with D = 200 kpc and M = M.
- The A2634 cloud (Giovanelli et al. 1995). Its linear dimensions are about kpc, and its M = M.
- The cloud discovered recently near the NGC 3256/3263 system by English (1994), with D = 120 kpc and M = M.
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