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arXiv · astro-ph/0304392

The Chandra Deep Field-North Survey. XIII. 2 Ms Point-Source Catalogs

Abstract

We present catalogs for the ~2 Ms Chandra Deep Field-North, currently the deepest X-ray observation of the Universe in the 0.5-8.0 keV band. Five hundred and three (503) X-ray sources are detected over an ~448 sq.arcmin area in up to seven bands; 20 of these X-ray sources lie in the Hubble Deep Field-North. Source positions are determined using matched-filter and centroiding techniques; the median positional uncertainty is ~0.3 arcsecs. The X-ray colors of the detected sources indicate a broad variety of source types, although absorbed AGNs (including some possible Compton-thick sources) are clearly the dominant type. We also match lower significance X-ray sources to optical counterparts and provide a list of 79 optically bright R<~23) lower significance Chandra sources. The majority of these sources appear to be starburst and normal galaxies. We investigate the source-free background, determine the maximum photon-limited exposures, and investigate source confusion. These analyses directly show that Chandra can achieve significantly higher sensitivities in an efficient nearly photon-limited manner and be largely free of source confusion. To allow consistent comparisons, we have also produced point-source catalogs for the ~1 Ms Chandra Deep Field-South (CDF-S). Three hundred and twenty-six (326) X-ray sources are included in the main Chandra catalog, and an additional 42 optically bright X-ray sources are included in a lower significance Chandra catalog. We find good agreement with the photometry of the previously published CDF-S catalogs; however, we provide significantly improved positional accuracy (ABRIDGED).

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BibTeXRIS

D. M. Alexander, F. E. Bauer, W. N. Brandt, D. P. Schneider, A. E. Hornschemeier, C. Vignali, A. J. Barger, P. S. Broos, L. L. Cowie, G. P. Garmire, L. K. Townsley, M. W. Bautz, G. Chartas, W. L. W. Sargent. 2003-04-22. The Chandra Deep Field-North Survey. XIII. 2 Ms Point-Source Catalogs. https://doi.org/10.1086/376473

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