Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.254..453g&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 254, Feb. 1, 1992, p. 453-465.
Astronomy and Astrophysics
Astronomy
26
Cosmology, Density Distribution, Galactic Clusters, Power Spectra, Astronomical Models, Confidence Limits, Correlation, Dark Matter, Spatial Distribution
Scientific paper
The present paper investigates the power spectrum of galaxies in the Virgo, Coma, and Perseus superclusters and their environment in order to obtain information on the evolutionary processes in the 'nearby' universe. In order to study the power spectrum, the density field of the distribution of galaxies is studied and its Fourier components are calculated. On scales 3-20/h Mpc the distribution of faint and normal galaxies in the Virgo supercluster is found to be similar in a wide interval of absolute magnitudes from -15 to -19. The amplitude of the spectrum of brighter galaxies gradually increases within this time interval. On larger scales the amplitude of the spectrum of normal and bright galaxies coincides, up to an absolute magnitude about -20. The amplitudes of the spectra in the Virgo, Coma, and Perseus superclusters on scales 3-20/h Mpc are similar for galaxies of the same luminosity. On scales 20-60/h Mpc the spectra in different regions of the universe are different.
Einasto Jaan
Gramann Mirt
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