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.
N1 - Funding Information:
We thank the referees for their helpful feedback that improved this work. Y.Q.X. acknowledges support from the National Thousand Young Talents program (KJ2030220004), the 973 Program (2015CB857004), the USTC startup funding (ZC9850290195), the National Natural Science Foundation of China (NSFC-11473026, 11421303), the Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences (XDB09000000), and the Fundamental Research Funds for the Central Universities (WK3440000001). B.L., W.N.B., and G.Y. acknowledge support from Chandra X-ray Center grants AR3-14015X and GO4-15130A, and Chandra ACIS team contract SV4-74018. D.M.A. acknowledges support from the Science and Technology Facilities Council through grant codes ST/I505656/1 and ST/L00075X/1. F.E.B. acknowledges support from CONICYT-Chile (Basal-CATA PFB-06/2007, FONDECYT 1141218, "EMBIGGEN" Anillo ACT1101), and the Ministry of Economy, Development, and Tourism's Millennium Science Initiative through grant IC120009, awarded to the Millennium Institute of Astrophysics, MAS. The Guaranteed Time Observations (GTO) for the CDF-N included here were selected by the ACIS Instrument Principal Investigator, Gordon P. Garmire, currently of the Huntingdon Institute for X-ray Astronomy, LLC, which is under contract to the Smithsonian Astrophysical Observatory; Contract SV2- 82024.
Publisher Copyright:
© 2016. The American Astronomical Society. All rights reserved..
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.
UR - http://www.scopus.com/inward/record.url?scp=84978151432&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84978151432&partnerID=8YFLogxK
U2 - 10.3847/0067-0049/224/2/15
DO - 10.3847/0067-0049/224/2/15
M3 - Review article
AN - SCOPUS:84978151432
VL - 224
JO - Astrophysical Journal, Supplement Series
JF - Astrophysical Journal, Supplement Series
SN - 0067-0049
IS - 2
M1 - 15
ER -