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

Y. Q. Xue, B. Luo, W. N. Brandt, D. M. Alexander, F. E. Bauer, B. D. Lehmer, G. Yang

Research output: Contribution to journalReview article

53 Citations (Scopus)

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 < 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.

Original languageEnglish (US)
Article number15
JournalAstrophysical Journal, Supplement Series
Volume224
Issue number2
DOIs
StatePublished - Jun 2016

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point sources
catalogs
point source
filter
methodology
simulation
data products
matched filters
thresholds
active galactic nuclei
centroids
x rays
product
galaxies
sensitivity
estimates

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

@article{d9e305ccfba34e63888102ef962305ce,
title = "THE 2 Ms CHANDRA DEEP FIELD-NORTH SURVEY and the 250 Ks EXTENDED CHANDRA DEEP FIELD-SOUTH SURVEY: IMPROVED POINT-SOURCE CATALOGS",
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 < 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.",
author = "Xue, {Y. Q.} and B. Luo and Brandt, {W. N.} and Alexander, {D. M.} and Bauer, {F. E.} and Lehmer, {B. D.} and G. Yang",
year = "2016",
month = "6",
doi = "10.3847/0067-0049/224/2/15",
language = "English (US)",
volume = "224",
journal = "Astrophysical Journal, Supplement Series",
issn = "0067-0049",
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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.

In: Astrophysical Journal, Supplement Series, Vol. 224, No. 2, 15, 06.2016.

Research output: Contribution to journalReview article

TY - JOUR

T1 - THE 2 Ms CHANDRA DEEP FIELD-NORTH SURVEY and the 250 Ks EXTENDED CHANDRA DEEP FIELD-SOUTH SURVEY

T2 - IMPROVED POINT-SOURCE CATALOGS

AU - Xue, Y. Q.

AU - Luo, B.

AU - Brandt, W. N.

AU - Alexander, D. M.

AU - Bauer, F. E.

AU - Lehmer, B. D.

AU - Yang, G.

PY - 2016/6

Y1 - 2016/6

N2 - 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.

AB - 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.

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DO - 10.3847/0067-0049/224/2/15

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