Morphological evolution of clusters

Details Morphological evolution of clusters Morphological evolution of clusters

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.250..607p&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 250, June 1, 1991, p. 607-610.

Astronomy and Astrophysics

Astronomy

3

Cosmology, Evolution (Development), Galactic Clusters, X Ray Sources, Galactic Structure, Luminosity

Scientific paper

Recently Edge et al. have shown evidence for an evolution in the luminosity function of X-ray clusters at low redshift. It is shown that this can be explained as a transition from high Bautz-Morgan type clusters to low Bautz-Morgan type (with a dominant central galaxy). This interpretation is supported by the, albeit incomplete, data in cluster catalogs. It is shown that different Bautz-Morgan types lie in different regions of the X-ray luminosity versus temperature diagram, and physical explanations for this distinction are suggested. High Bautz-Morgan type clusters seem to obey the constant, or maximum, core radius relation suggested by Edge et al. Low Bautz-Morgan types may have a constant, or maximum, core density. Alternatively, the central galaxy halo may boost the X-ray flux.

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