Y.Q. Xue
The 2 Ms Chandra Deep Field-North Survey and the 250 ks Extended Chandra Deep Field-South Survey: Improved Point-Source Catalogs
Xue, Y.Q.; Luo, B.; Brandt, W.N.; Alexander, D.M.; Bauer, F.E.; Lehmer, B.D.; Yang, G.
Authors
B. Luo
W.N. Brandt
Professor David Alexander d.m.alexander@durham.ac.uk
Professor
F.E. Bauer
B.D. Lehmer
G. Yang
Abstract
Abstract We present improved point-source catalogs for the 2 Ms Chandra Deep Field-North (CDF-N) and the 250 ks Extended Chandra Deep Field-South (E-CDF-S) Surveys, implementing a number of recent improvements in Chandra source-cataloging methodology. For CDF-N/E-CDF-S, we provide a main catalog that contains 683/1003 X-ray sources detected with wavdetect at a false-positive probability threshold of 10−5 that also satisfy a binomial-probability source-selection criterion of $P\lt 0.004$/P < 0.002. Such an approach maximizes the number of reliable sources detected: a total of 196/275 main-catalog sources are new compared to the Alexander et al. CDF-N/Lehmer et al. E-CDF-S main catalogs. We also provide CDF-N/E-CDF-S supplementary catalogs that consist of 72/56 sources detected at the same wavdetect threshold and having P of 0.004–0.1/0.002–0.1 and ${K}_{s}\leqslant 22.9/{K}_{s}\leqslant 22.3$ mag counterparts. For all $\approx 1800$ CDF-N and E-CDF-S sources, including the $\approx 500$ newly detected ones (these being generally fainter and more obscured), we determine X-ray source positions utilizing centroid and matched-filter techniques; we also provide multiwavelength identifications, apparent magnitudes of counterparts, spectroscopic and/or photometric redshifts, basic source classifications, and estimates of observed active galactic nucleus and galaxy source densities around respective field centers. Simulations show that both the CDF-N and E-CDF-S main catalogs are highly reliable and reasonably complete. Background and sensitivity analyses indicate that the on-axis mean flux limits reached represent a factor of $\approx 1.5$–2.0 improvement over the previous CDF-N and E-CDF-S limits. We make our data products publicly available.
Citation
Xue, Y., Luo, B., Brandt, W., Alexander, D., Bauer, F., Lehmer, B., & Yang, G. (2016). The 2 Ms Chandra Deep Field-North Survey and the 250 ks Extended Chandra Deep Field-South Survey: Improved Point-Source Catalogs. Astrophysical Journal Supplement, 224(2), Article 15. https://doi.org/10.3847/0067-0049/224/2/15
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 17, 2016 |
Online Publication Date | May 26, 2016 |
Publication Date | May 26, 2016 |
Deposit Date | Jun 21, 2017 |
Publicly Available Date | Mar 29, 2024 |
Journal | Astrophysical Journal Supplement |
Print ISSN | 0067-0049 |
Electronic ISSN | 1538-4365 |
Publisher | American Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 224 |
Issue | 2 |
Article Number | 15 |
DOI | https://doi.org/10.3847/0067-0049/224/2/15 |
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Copyright Statement
© 2016. The American Astronomical Society. All rights reserved.
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