A Homogeneous Bright QSO Survey

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 sq.deg area, covered by the six "deep" fields, intended to obtain significant statistics down B=~18.75 with unprecedented photometric accuracy. From this database, QSO counts are determined in the magnitude range 17<B<18.75.

Cone search capability for table J/A+AS/112/347/f287 (List of candidates and their spectroscopic identification: Field 287)

Cone search capability for table J/A+AS/112/347/f351 (List of candidates and their spectroscopic identification: Field 351)

Cone search capability for table J/A+AS/112/347/f534 (List of candidates and their spectroscopic identification: Field 534)

Cone search capability for table J/A+AS/112/347/fsa94 (List of candidates and their spectroscopic identification: Field SA94)

Cone search capability for table J/A+AS/112/347/fsgp (List of candidates and their spectroscopic identification: Field SGP)

Cone search capability for table J/A+AS/112/347/f295 (List of candidates and their spectroscopic identification: Field 295)

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/A+AS/112/347
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/112/347
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/112/347
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/A+AS/112/347
Provenance
Creator CRISTIANI S.; LA FRANCA F.; ANDREANI P.; GEMMO A.; GOLDSCHMIDT P.,MILLER L.; VIO R.; BARBIERI C.; BODINI L.; IOVINO A.; LAZZARIN M.,CLOWES R.; MACGILLIVRAY H.; GOUIFFES CH.; LISSANDRINI C.; SAVAGE A.
Publisher CDS
Publication Year 1997
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Galactic and extragalactic Astronomy; High Energy Astrophysics; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy