Details on Acronym: QORG | |
QORG | (Quasars Org.) |
Write: | <<QORG JHHMMSS.s+DDMMSS>> |
N: | 501761 |
Object: | Poss. QSO (SIMBAD class: QSO_Candidate = Quasar Candidate) |
Note: | The QUASARS.ORG Catalogues align and overlay the year 2001-2 releases of the ROSAT HRI, RASS, PSPC and WGA X-ray catalogues, the NVSS, FIRST and SUMSS radio catalogues, the Veron QSO catalogue, the Principal Galaxy Catalogue, and the SDSS-EDR (2001) onto the optical APM and USNO catalogues. |
Notes: | In addition these catalogues display calculated percentage probabilities for each optical radio-Xray-associated object of its likelihood of being a quasar, galaxy, star, or erroneous radio-Xray association. The source optical catalogues used are the APM general catalogue of 959 POSS-I and UKST plates, and the USNO A1.0 and USNO A2.0 catalogues, combined into a 670,000,000 merged catalogue photometrically recalibrated plate by plate. Up to six radio-Xray catalog identifications are presented for each optical object, plus double radio lobes where identified. The main Master catalogue displays all 425932 radio-Xray associated optical objects, plus optically-found catalogued QSO-AGN-BLLac objects with confidence about 40per100 of being a radio-X-ray emitting optical object. The Free-Lunch catalogue is a concise easy-to-read variant of the Master catalogue showcasing just one Xray and/or radio identification for each object. There is also a subset catalogue of QSO candidates, and a subset catalogue of known QSOs-galaxies-stars. |
Ref: | =2004A&A...427..387F |
by | FLESCH E. , HARDCASTLE M.J. |
Astron. Astrophys., 427, 387-392 (2004) | |
An all-sky optical catalogue of radio/X-ray sources. | |
o | Catalog QORG JHHMMSS.s+DDMMSS: the catalog in VizieR has this format. |
o | Catalog: <QORG JHHMMSS.ss+DDMMSS> N=501761. |
=E= | Catalogue in electronic form as J/A+A/427/387 |
Origin | of the Acronym: p = Pre-registered to IAU Comm.5 |