Abstract
It is well known that the rotation curves of many galaxies remain flat well outside their optical disks. This leads to the conclusion that the visible mass in galaxies is only a small fraction of the total (see e.g. Faber & Gallagher 1979). Although we are certain that “dark matter” exists, its composition and distribution are still unknown.
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© 1996 Springer Science+Business Media Dordrecht
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De Geus, E.J., Phillips, J.A. (1996). The Search for Cold Molecular Gas in the Outer Galaxy. In: Blitz, L., Teuben, P. (eds) Unsolved Problems of the Milky Way. International Astronomical Union / Union Astronomique Internationale, vol 169. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1687-6_91
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DOI: https://doi.org/10.1007/978-94-009-1687-6_91
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