We present a sample of 97 ultraviolet excess (UVx) QSOs (M(B) < -23) selected in the central 10 deg2 of the selected area 94 with B less-than-or-equal-to 19.9 mag. The color-color (U - B vs B - V) diagram has been used to identify 200 low-redshift (z less-than-or-equal-to 2.2) QSO candidates. 118 extragalactic emission-line objects have been spectroscopically confirmed, including 14 Seyfert (M(B) greater-than-or-equal-to -23) and 7 H II galaxies. The selection function of this survey as a function of the magnitude and redshift has been evaluated, corresponding to a total incompleteness of approximately 8%. The corrected computation of the QSO n(m) relation for z less-than-or-equal-to 2.2 is in good agreement with that of other surveys over ...
The sub-population of quasars reddened by intrinsic or intervening clouds of dust are known to be un...
We analyze the counts of low-redshift quasar candidates selected using nine-epoch SDSS imaging data....
Aims. We aim to illustrate the potentiality of the Advanced Large, Homogeneous Area, Medium-Band Red...
We present a sample of 97 ultraviolet excess (UVx) QSOs (M(B) < -23) selected in the central 10 deg2...
A new sample of quasars has been selected in the central 10 square degrees of SA 94. The color-color...
We continue the QSO search in the 10 square degrees Schmidt field around M92 based on variability an...
We use a simple optical/infrared (IR) photometric selection of high-redshift QSOs that identifies a ...
The combination of variability and proper motion constraints (VPM search) is believed to provide an...
A search for intermediate-redshift quasars has been carried out with slitless spectroscopy in the ce...
A search for intermediate-redshift quasars has been carried out with slitless spectroscopy in the ce...
We continue the QSO search in the 10 square degrees Schmidt field around M 92 based on variability a...
We have improved upon our previous search technique of systematically searching QSO spectra for narr...
Extensive QSO surveys carried out by SDSS have provided a very large sample of quasars both at low a...
Spectra, position, magnitudes and colors are presented for 485 faint (B(J) < 20.5) emission line obj...
Preliminary results of a search for QSO candidates in a 25 square degree field around NGC 450 are pr...
The sub-population of quasars reddened by intrinsic or intervening clouds of dust are known to be un...
We analyze the counts of low-redshift quasar candidates selected using nine-epoch SDSS imaging data....
Aims. We aim to illustrate the potentiality of the Advanced Large, Homogeneous Area, Medium-Band Red...
We present a sample of 97 ultraviolet excess (UVx) QSOs (M(B) < -23) selected in the central 10 deg2...
A new sample of quasars has been selected in the central 10 square degrees of SA 94. The color-color...
We continue the QSO search in the 10 square degrees Schmidt field around M92 based on variability an...
We use a simple optical/infrared (IR) photometric selection of high-redshift QSOs that identifies a ...
The combination of variability and proper motion constraints (VPM search) is believed to provide an...
A search for intermediate-redshift quasars has been carried out with slitless spectroscopy in the ce...
A search for intermediate-redshift quasars has been carried out with slitless spectroscopy in the ce...
We continue the QSO search in the 10 square degrees Schmidt field around M 92 based on variability a...
We have improved upon our previous search technique of systematically searching QSO spectra for narr...
Extensive QSO surveys carried out by SDSS have provided a very large sample of quasars both at low a...
Spectra, position, magnitudes and colors are presented for 485 faint (B(J) < 20.5) emission line obj...
Preliminary results of a search for QSO candidates in a 25 square degree field around NGC 450 are pr...
The sub-population of quasars reddened by intrinsic or intervening clouds of dust are known to be un...
We analyze the counts of low-redshift quasar candidates selected using nine-epoch SDSS imaging data....
Aims. We aim to illustrate the potentiality of the Advanced Large, Homogeneous Area, Medium-Band Red...