The ESO Key-Programme ``A Homogeneous Bright QSO Survey'' - I The Methods and the ``Deep'' Fields

S. Cristiani; F. La Franca; P. Andreani; A. Gemmo; P. Goldschmidt; L. Miller; R. Vio; C. Barbieri; L. Bodini; A. Iovino; M. Lazzarin; R. Clowes; H. MacGillivray; Ch. Gouiffes; C. Lissandrini; A. Savage

arXiv · astro-ph/9505133

The ESO Key-Programme ``A Homogeneous Bright QSO Survey'' - I The Methods and the ``Deep'' Fields

S. Cristiani·F. La Franca·P. Andreani·A. Gemmo·P. Goldschmidt·L. Miller·R. Vio·C. Barbieri·L. Bodini·A. Iovino·M. Lazzarin·R. Clowes·H. MacGillivray·Ch. Gouiffes·C. Lissandrini·A. Savage

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Abstract

This is the first paper in a series aimed at defining a statistically significant sample of QSOs in the range $ 15 < B < 18.75$ and $ 0.3 < z < 2.2$. The selection is carried out using direct plates obtained at the ESO and UK Schmidt Telescopes, scanned with the COSMOS facility and searched for objects with an ultraviolet excess. Follow-up spectroscopy, carried out at ESO La Silla, is used to classify each candidate. In this initial paper, we describe the scientific objectives of the survey; the selection and observing techniques used. We present the first sample of 285 QSOs ($M_B < -23$) in a 153 deg$^2$ area, covered by the six ``deep'' fields, intended to obtain significant statistics down $B \simeq 18.75$ with unprecedented photometric accuracy. From this database, QSO counts are determined in the magnitude range $ 17 < B < 18.75$.

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S. Cristiani, F. La Franca, P. Andreani, A. Gemmo, P. Goldschmidt, L. Miller, R. Vio, C. Barbieri, L. Bodini, A. Iovino, M. Lazzarin, R. Clowes, H. MacGillivray, Ch. Gouiffes, C. Lissandrini, A. Savage. 1995-05-29. The ESO Key-Programme ``A Homogeneous Bright QSO Survey'' - I The Methods and the ``Deep'' Fields. https://arxiv.org/abs/astro-ph/9505133

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