Spectra, position, magnitudes and colors are presented for 485 faint (B(J) < 20.5) emission line objects selected with the ultraviolet-excess (UVX) criterion on a area of 24.6 deg(2) in the South Galactic Pole. The objects were selected from the analysis of pixel-to-pixel stacking of COSMOS scans of UKST U J and R plates. The candidates were observed with the Meudon-ESO Fiber Optics System (MEFOS) at the ESO 3.6 m telescope. 429 type 1 AGNs have been identified (373 in the redshift range 0.3 < z less than or equal to 2.2). This sample has allowed the measure of a difference on the QSO clustering evolution in comparison with that found for galaxies (La Franca et al. 1998). The region is part of the ESO Imaging Survey (EIS) and of the 2dF QSO redshift, survey.
LA FRANCA, F., Lissandrini, C., Cristiani, S., Miller, L., Hawkins, M., Mcgillivray, H.t. (1999). A survey of UV-excess AGNs in the South Galactic Pole - A sample for the analysis of the QSO clustering. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 140(3), 351-353.
A survey of UV-excess AGNs in the South Galactic Pole - A sample for the analysis of the QSO clustering
LA FRANCA, Fabio;
1999-01-01
Abstract
Spectra, position, magnitudes and colors are presented for 485 faint (B(J) < 20.5) emission line objects selected with the ultraviolet-excess (UVX) criterion on a area of 24.6 deg(2) in the South Galactic Pole. The objects were selected from the analysis of pixel-to-pixel stacking of COSMOS scans of UKST U J and R plates. The candidates were observed with the Meudon-ESO Fiber Optics System (MEFOS) at the ESO 3.6 m telescope. 429 type 1 AGNs have been identified (373 in the redshift range 0.3 < z less than or equal to 2.2). This sample has allowed the measure of a difference on the QSO clustering evolution in comparison with that found for galaxies (La Franca et al. 1998). The region is part of the ESO Imaging Survey (EIS) and of the 2dF QSO redshift, survey.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
