Journal article
The outer rotation curve of the Milky Way
- Abstract:
- A straightforward determination of the circular-speed curve vc(R) of the Milky Way suggests that near the Sun, vc starts to rise approximately linearly with R. If this result were correct, the Galactic mass density would have to be independent of radius at R ~> R0. We show that the apparent linear rise in v_c arises naturally if the true circular-speed curve is about constant or gently falling at R0 < R ~< 2 R0, but most tracers that appear to be at R ~> 1.25 R0 are actually concentrated into a ring of radius ~1.6 R0.
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Authors
- Publication date:
- 1996-12-05
- Keywords:
- Pubs id:
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pubs:167495
- UUID:
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uuid:1543af97-7331-403a-b450-f20277e53796
- Local pid:
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pubs:167495
- Source identifiers:
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167495
- Deposit date:
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2013-02-20
- ARK identifier:
Terms of use
- Copyright date:
- 1996
- Notes:
- 3 pages, LaTeX, uses mn.sty, 5 .ps figures, submitted to MNRAS
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