THE CHANDRA X-RAY POINT-SOURCE CATALOG IN THE DEEP2 GALAXY REDSHIFT SURVEY FIELDS
THE CHANDRA X-RAY POINT-SOURCE CATALOG IN THE DEEP2 GALAXY REDSHIFT SURVEY FIELDS
复制标题
Deep2 星系红移勘测场中的钱德拉 X 射线点源目录
DOI：
10.1088/0067-0049/202/1/6
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
J. Newman
中科院分区：
文献类型：
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作者：
A. Goulding;W. Forman;R. Hickox;R. Hickox;R. Hickox;C. Jones;R. Kraft;S. S. Murray;S. S. Murray;A. Vikhlinin;A. Coil;M. C. Cooper;Michael Davis;J. Newman
我们提出的X射线点源目录产生的钱德拉先进的CCD成像光谱仪（ACIS-I）的组合3.2 deg 2深度2（XDEEP 2）调查领域，其中包括四个0.7-1.1 deg 2领域的观测。在所有四个XDEEP 2领域的组合总曝光范围从1000千至1.1毫秒。我们检测到X射线点源在两个单独的ACIS-I的意见和重叠区域合并（堆叠）的图像。我们发现在调查区域内共有2976个独特的X射线源，预期的假源污染为1030个源（101%）。我们提出了在XDEEP 2勘测场检测到的源的组合对数N-对数S分布，并与扩展的钱德拉深场和钱德拉-宇宙场找到了很好的一致性。考虑到XDEEP 2的大调查面积，我们还对高通量下的log N-log S分布施加了相对较强的约束（），并发现与较小面积调查相比，该制度中的源数量较低，系统偏移较小（因子为1.5）。在XDEEP 2中观察到的计数与X射线背景合成模型预测的计数非常一致。此外，我们提出了一种贝叶斯风格的方法，用于将X射线源与DEEP 2目录中的光学光度对应物（完整到RAB < 25.2）关联起来，并发现此处提供的2976个X射线源中的2126个（≈71.4% ± 2.8%）具有安全的光学对应物，污染分数为0.6%。我们提供了DEEP 2光源属性（例如，星等，红移）作为X射线光学对应目录的一部分。
We present the X-ray point-source catalog produced from the Chandra Advanced CCD Imaging Spectrometer (ACIS-I) observations of the combined ∼3.2 deg2 DEEP2 (XDEEP2) survey fields, which consist of four ∼0.7–1.1 deg2 fields. The combined total exposures across all four XDEEP2 fields range from ∼10 ks to 1.1 Ms. We detect X-ray point sources in both the individual ACIS-I observations and the overlapping regions in the merged (stacked) images. We find a total of 2976 unique X-ray sources within the survey area with an expected false-source contamination of ≈30 sources (≲ 1%). We present the combined log N–log S distribution of sources detected across the XDEEP2 survey fields and find good agreement with the Extended Chandra Deep Field and Chandra-COSMOS fields to . Given the large survey area of XDEEP2, we additionally place relatively strong constraints on the log N–log S distribution at high fluxes (), and find a small systematic offset (a factor ∼1.5) toward lower source numbers in this regime, when compared to smaller area surveys. The number counts observed in XDEEP2 are in close agreement with those predicted by X-ray background synthesis models. Additionally, we present a Bayesian-style method for associating the X-ray sources with optical photometric counterparts in the DEEP2 catalog (complete to RAB < 25.2) and find that 2126 (≈71.4% ± 2.8%) of the 2976 X-ray sources presented here have a secure optical counterpart with a ≲ 6% contamination fraction. We provide the DEEP2 optical source properties (e.g., magnitude, redshift) as part of the X-ray–optical counterpart catalog.
DOI：
10.1088/0004-637x/693/1/447
发表时间：
2008-10
期刊：
The Astrophysical Journal
影响因子：
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作者：
F. Fiore;S. Puccetti;M. Brusa;M. Salvato;G. Zamorani;T. Aldcroft;H. Aussel;H. Brunner;P. Capak;N. Cappelluti;F. Civano;A. Comastri;M. Elvis;C. Feruglio;A. Finoguenov;A. Fruscione;R. Gilli;G. Hasinger;A. Koekemoer;J. Kartaltepe;O. Ilbert;C. Impey;E. Floc’h;S. Lilly;V. Mainieri;A. Martínez-Sansigre;H. McCracken;N. Menci;A. Merloni;T. Miyaji;D. Sanders;M. Sargent;E. Schinnerer;N. Scoville;J. Silverman;V. Smolčić;A. Steffen;P. Santini;Y. Taniguchi;D. Thompson;D. Thompson;J. Trump;C. Vignali;M. Urry;Lin Yan
通讯作者：
F. Fiore;S. Puccetti;M. Brusa;M. Salvato;G. Zamorani;T. Aldcroft;H. Aussel;H. Brunner;P. Capak;N. Cappelluti;F. Civano;A. Comastri;M. Elvis;C. Feruglio;A. Finoguenov;A. Fruscione;R. Gilli;G. Hasinger;A. Koekemoer;J. Kartaltepe;O. Ilbert;C. Impey;E. Floc’h;S. Lilly;V. Mainieri;A. Martínez-Sansigre;H. McCracken;N. Menci;A. Merloni;T. Miyaji;D. Sanders;M. Sargent;E. Schinnerer;N. Scoville;J. Silverman;V. Smolčić;A. Steffen;P. Santini;Y. Taniguchi;D. Thompson;D. Thompson;J. Trump;C. Vignali;M. Urry;Lin Yan