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Optical identifications and spectroscopy of a faint radio source sample: the nature of the sub-mJy population
Carlotta Gruppioni, Marco Mignoli, Gianni Zamorani
Deep imaging and spectroscopy have been carried out for optical counterparts of a sample of 68 faint radio sources (S > 0.2 mJy) in the ``Marano Field''. About 60% of the sources h…
The ESO Slice Project (ESP) galaxy redshift survey: VI Groups of Galaxies
M. Ramella, G. Zamorani, E. Zucca +17
In this paper we identify objectively and analyze groups of galaxies in the recently completed ESP survey. We find 231 groups above the number overdensity threshold delta(rho)/rho=…
Steps Toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XV. Long-Term Optical Monitoring of NGC 5548
B. M. Peterson, A. J. Barth, P. Berlind +34
We present the results of three years of ground-based observations of the Seyfert 1 galaxy NGC 5548, which combined with previously reported data, yield optical continuum and broad…
The ESO Slice Project (ESP) galaxy redshift survey IV. A discussion of systematic biases in galaxy redshift determinations
A. Cappi, G. Zamorani, E. Zucca +17
We present a detailed discussion of the redshift errors associated to the ESO Slice Project measurements. For a subsample of 742 galaxies with redshifts determined both from the ab…
The ESO Slice Project (ESP) galaxy redshift survey: III. The Sample
G. Vettolani, E. Zucca, R. Merighi +17
The ESO Slice Project (ESP) is a galaxy redshift survey extending over about 23 square degrees, in a region near the South Galactic Pole. The survey is ~85% complete to the limitin…
The ESO Slice Project [ESP] galaxy redshift survey: V. Evidence for a D=3 sample dimensionality
R. Scaramella, L. Guzzo, G. Zamorani +17
The issue of the approximate isotropy and homogeneity of the observable universe is one of the major topics in modern Cosmology: the common use of the Friedmann-Robertson-Walker [F…