The Panoramic Deep Fields

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

The environments and evolution of AGN and galaxies have been measured with the Panoramic Deep Fields, a deep multicolor survey of two ~ 25o fields. The deep (BJ ~ 23.5) wide-field images have been produced by digitally stacking SuperCOSMOS scans of UK Schmidt photographic plates. The resulting object catalogues contain ~ 3x 105 galaxies per field. The size, depth and colors of the Panoramic Deep Field galaxy catalogues has allowed measurements of the environments of radio-quiet AGN and radio galaxies, the clustering of galaxies as a function of color, the evolution of the radio galaxy luminosity function and the space density of galaxy clusters at z<0.5. In this presentation the environments of radio-quiet AGN at intermediate redshifts are discussed in detail. By applying photometric redshifts and color selection to the galaxy catalogue, it has been possible to measure the angular cross-correlation function of AGN with early and late-type galaxies. The AGN-late cross-correlation function is weak and has been detected with low significance. In contrast, the AGN-early cross-correlation function is detected with high significance and the observed clustering is comparable to the autocorrelation function of early-type galaxies at low redshift. The author acknowledges the financial support of an Australian Postgraduate Award.

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