Electronic Resource
Springer
Astrophysics and space science
67 (1980), S. 31-43
ISSN:
1572-946X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Rotation curves of our Galaxy, M31 and M81 have a deep minimum atR=1–4 kpc. It is demonstrated that this minimum can be dynamically explained if the stellar disks of these galaxies have no representatives in the central region. Such a ring-like distribution of matter in stellar disks is suggested by the similarity observed in the distribution of extreme Population I objects if we assume that a stellar disk was formed from a gaseous disk which always had a ring-like structure. The presence of central holes in disks of spiral galaxies suggests that during the initial collapse phase almost all protogalactic gas with a low angular momentum has been consumed to form the spheroidal component. No low-momentum gas was left over to form central parts of stellar disks.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00651866
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