Astronomy and Astrophysics – Astronomy
Scientific paper
May 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.256p..43e&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 256, no. 2, May 15, 1992, p. 43P-47P.
Astronomy and Astrophysics
Astronomy
394
Cosmic Plasma, Cosmology, Diffuse Radiation, Dwarf Galaxies, Galactic Evolution, Photoionization, Quasars, Helium Plasma, Hydrogen Plasma, Plasma Cooling, Red Shift, Supernovae, Universe
Scientific paper
In hierarchical clustering theories, some sort of feedback mechanism is required to prevent most of the baryonic material collapsing into subgalactic objects at high redshifts. It is argued that a photoionizing background of the magnitude suggested by applying the Gunn-Peterson constraint to high-redshift quasars would strongly suppress the cooling of a hydrogen-helium plasma and so inhibit the formation of dwarf galaxies. The effectiveness of this mechanism depends on the spectrum of the photoionizing radiation, and so galaxy formation could depend on the proximity of protogalactic perturbations to unusual sources of hard photons such as luminous quasars. This could introduce large-scale spatial variations in the galaxy distribution.
No associations
LandOfFree
Suppressing the formation of dwarf galaxies via photoionization does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Suppressing the formation of dwarf galaxies via photoionization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Suppressing the formation of dwarf galaxies via photoionization will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1518723