Issue |
A&A
Volume 427, Number 1, November III 2004
|
|
---|---|---|
Page(s) | 387 - 392 | |
Section | Catalogs and data | |
DOI | https://doi.org/10.1051/0004-6361:20041076 | |
Published online | 25 October 2004 |
An all-sky optical catalogue of radio/X-ray sources *,**
1
PO Box 12520, Wellington, New Zealand e-mail: eric@flesch.org
2
Department of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK e-mail: m.hardcastle@bristol.ac.uk
Received:
13
April
2004
Accepted:
15
July
2004
We present an all-sky catalogue that aligns and overlays the
ROSAT HRI, RASS, PSPC and WGA X-ray catalogues and the NVSS,
FIRST and SUMSS radio catalogues onto the optical APM and USNO-A
catalogues. Objects presented are those APM/USNO-A optical objects
which are calculated with ≥% confidence to be associated with
radio/X-ray detections, or which are identified as known QSOs, AGN or
BL Lacs, totalling 501 761 objects in all, including 48 285 QSOs and
21 498 double radio lobe detections. For each radio/X-ray associated
optical object we display the calculated percentage probabilities of
its being a QSO, galaxy, star, or erroneous radio/X-ray association,
plus any identification from the literature. The catalogue includes
86 009 objects which were not previously identified and which we list
as being 40% to >99% likely to be a QSO. As a byproduct of the
construction of this catalogue, we are able to list comprehensive
ROSAT field shifts as determined by our whole-sky likelihood
algorithm, and also plate-by-plate photometric recalibration of the
complete APM and USNO-A2.0 optical catalogues, significantly improving
accuracy for objects of >15 mag. The catalogue is available wholly and
in subsets at http://quasars.org/qorg-data.htm
Key words: catalogs / galaxies: active / galaxies: quasars: general
© ESO, 2004
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.