Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.221...53c&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 221, July 1, 1986, p. 53-62.
Astronomy and Astrophysics
Astrophysics
203
Cold Plasmas, Cosmology, Galactic Evolution, Galactic Structure, Missing Mass (Astrophysics), Rotating Matter, Density Distribution, Mass Distribution, Photoionization, Star Clusters, Stellar Evolution, Supernovae, Universe
Scientific paper
The authors discuss the possibility that the first objects forming in a universe dominated by cold dark matter might influence subsequent structure. They argue that the first objects would be stars forming in clusters of mass ≡105M_sun; which have condensed from the high-σ overdensity peaks in the initial fluctuation spectrum. Two simple mechanisms - photoionization and supernovae - may cause feedback effects which can significantly perturb the subsequent evolution from a simple hierarchical clustering progression. The authors discuss the possibility that effects arising from these initial small-scale clusters might influence regions on galactic scales and suggest tentative ideas which may give clues to the biasing of galaxy formation necessary in an Ω = 1 universe.
Couchman Hugh M. P.
Rees Martin J.
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