THE 2 Ms CHANDRA DEEP FIELD-NORTH SURVEY AND THE 250 Ks EXTENDED CHANDRA DEEP FIELD-SOUTH SURVEY: IMPROVED POINT-SOURCE CATALOGS

By Yongquan Xue, B. Luo, W. N. Brandt, D. M. Alexander, F. E. Bauer, B. Lehmer, G. Yang. 2016

133 citations recorded by the source corpus.

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 < 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 mag counterparts. For all CDF-N and E-CDF-S sources, including the 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 –2.0 improvement over the previous CDF-N and E-CDF-S limits. We make our data products publicly available.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/5594b771e52b8488e9af6a8a5c877fbb7e32c4c3

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Citations in the corpus

JADES Initial Data Release for the Hubble Ultra Deep Field: Revealing the Faint Infrared Sky with Deep JWST NIRCam Imaging (2023, background): “…such as from the HUDF09 and HUDF12 program ( Ellis et al. 2013; Illingworth et al. 2013 ) , the continued investment of Chandra imaging ( e.g., Xue et al. 2016 ) , deep Atacama Large Millimeter / submillimeter Array observations ( Aravena et al. 2016; Walter et al. 2016; Dunlop et al. 2017;…”
x-cigale: fitting AGN/galaxy SEDs from X-ray to infrared (2020, methodology): “In X-ray catalogs (e.g. Xue et al. 2016; Luo et al. 2017), X-ray fluxes ( fX) are conventionally given in the cgs units of erg s−1 cm−2, but X-CIGALE requires the input fluxes ( fcigale) to be given in the units of mJy.”