VizieR Online Data Catalog: BMW-Chandra source catalog (Romano+, 2008)
Abstract
The catalogue consists of count rates and relative errors in three energy bands (total, 0.5-7keV; soft, 0.5-2keV; and hard, 2-7keV), and source positions relative to the highest signal-to-noise detection among the three bands. The wavelet algorithm also provides an estimate of the extension of the source. We include information drawn from the headers of the original files, as well, and extracted source counts in four additional energy bands, SB1 (0.5-1keV), SB2 (1-2keV), HB1 (2-4keV), and HB2 (4-7keV). We computed the sky coverage for the full catalogue and for a subset at high Galactic latitude (|b|>20deg). The complete catalogue provides a sky coverage in the soft band (0.5-2keV, S/N=3) of ~8deg2 at a limiting flux of 10-13erg/cm^2/s, and ~2deg2 at a limiting flux of ~10-15erg/cm^2/s. Furthermore, we present the results of the cross-match with existing catalogues at different wavelengths (FIRST, IRAS, 2MASS, GSC2, and ChaMP). The total numbers of matches with the FIRST, IRASPSC, 2MASS, and GSC2 catalogues obtained after a closest-distance selection are 13, 87, 6700, and 4485, respectively.
(2 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- September 2008
- DOI:
- 10.26093/cds/vizier.34881221
- Bibcode:
- 2008yCat..34881221R
- Keywords:
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- Surveys;
- X-ray sources