Statistical analysis of correlation between the positions of quasars and the uppsala galaxies

Details Statistical analysis of correlation between the positions of quasars and the uppsala galaxies Statistical analysis of correlation between the positions of quasars and the uppsala galaxies

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983cha%26a...7..245z&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 7, Issue 4, p. 245-250.

Astronomy and Astrophysics

Astrophysics

Scientific paper

The question of the association of quasars with galaxies is re-examined using 785 quasars at b >= 30, δ >= - 02°30' in the new Hewitt and Burbidge Catalog (1980) and all galaxies in the ``Uppsala General Catalogue of Galaxies'' (Nilson, 1973). The results of the two-point cross-correlation function are presented and they show that there are on the average 0.153 +/- 0.011 more galaxies within 10'.0 of a QSO than would be expected if the QSOs were distributed randomly. We find the marginal significance of the tendency for correlation between QSOs and galaxies to increase with increasing redshifts z or apparent magnitudes V. The nearest neighbor test has also been taken to analyse the same data as well as get further evidence for the apparent association between QSOs and galaxies.

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