Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.225..795c&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 225, April 15, 1987, p. 795-822.
Astronomy and Astrophysics
Astrophysics
12
Cosmology, Dark Matter, Galactic Clusters, Galactic Evolution, Statistical Analysis, Galactic Structure, Photoionization, Star Formation, Supernovae
Scientific paper
The shallow slope of the n = 1 adiabatic Cold Dark Matter spectrum leads to an enhanced clustering of very overdense subgalactic scale peaks - of characteristic size 10-2Mpc - into the overdense regions on very much larger scales. This effect may be significant on scales up to that of a galaxy (≡1 Mpc). This result is considered in conjunction with simple astrophysical mechanisms - photoionizing radiation and supernova explosions - resulting from the formation of stars in the first small-scale peaks. It is shown that this kind of feedback may promote the formation of further structure in the high overdensities (⪆2 σ) on galaxy scales before the gravitational condensation of these large regions.
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