On the two-point correlations of galaxies in the CfA survey

Details On the two-point correlations of galaxies in the CfA survey On the two-point correlations of galaxies in the CfA survey

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...227..324b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 227, no. 2, Jan. 1990, p. 324-332.

Astronomy and Astrophysics

Astronomy

18

Galactic Structure, Sky Surveys (Astronomy), Elliptical Galaxies, Irregular Galaxies, Luminosity, Red Shift, Spiral Galaxies

Scientific paper

Using data based on the 14.5 m(B) CfA redshift survey (Huchra et al., 1983) of 2400 galaxies, the dependence of the two-point correlations of galaxies on their intrinsic luminosity and morphology and the sample volume. It was found that the luminosity weighted correlation function (WF) is significantly larger than the unweighted function (PF). The excess of WFs to PFs was also observed for subsamples with different morphological types. Subsamples with large intrinsic luminosity limits give larger correlation lengths than those with small limits, even though they occupy the same regions in space. There is a trend of increasing correlation length with increasing sample depth, considered to be due to the existence of local density enhancements. The correlation strength of elliptical and lenticular galaxies was found to be about 1.7 times that of the spirals and irregulars.

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