DEEP2 Galaxy Redshift Survey Fields Chandra Point Source Catalog

Description

This table contains the X-ray point-source catalog produced from the Chandra Advanced CCD Imaging Spectrometer (ACIS-I) observations of the combined ~3.2 deg<sup>2</sup> DEEP2 (XDEEP2) survey fields, which consist of four ~ 0.7 - 1.1 deg<sup>2</sup> fields. The combined total exposures across all four XDEEP2 fields range from ~ 10 ks to 1.1 Ms. The authors detect X-ray point sources in both the individual ACIS-I observations and the overlapping regions in the merged (stacked) images. They find a total of 2976 unique X-ray sources within the survey area with an expected false-source contamination of ~ 30 sources (<~ 1%). In their paper, the authors 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 f_(X,0.5-2keV)_ ~ 2 x 10<sup>-16</sup> erg cm<sup>-1</sup> s<sup>-1</sup>. Given the large survey area of XDEEP2, they additionally place relatively strong constraints on the log N-log S distribution at high fluxes (f_(X,0.5-2keV) ~ 3 x 10<sup>-14</sup> erg cm<sup>-1</sup> s<sup>-1</sup>), 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, the authors present a Bayesian-style method for associating the X-ray sources with optical photometric counterparts in the DEEP2 catalog (complete to R<sub>AB</sub> < 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. The present table provides the DEEP2 optical source properties (e.g., magnitude, redshift) as part of the X-ray-optical counterpart catalog. This table was created by the HEASARC in October 2012 based on electronic versions of Tables 5 and 7 from the reference paper which were obtained from the ApJS web site. This is a service provided by NASA HEASARC .

Resources

Name Format Description Link
5 https://heasarc.gsfc.nasa.gov%2FW3Browse%2Fall%2Fxdeep2.html
5 https://heasarc.gsfc.nasa.gov%2Fxamin%2Fvo%2Fcone%3Fshowoffsets%26table%3Dxdeep2%26
21 xdeep2.html https://heasarc.gsfc.nasa.gov/W3Browse/all/xdeep2.html
5 https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=xdeep2&
21 fermigtrig.html https://heasarc.gsfc.nasa.gov/W3Browse/all/fermigtrig.html
5 https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=fermigtrig&
21 xdeep2.html https://heasarc.gsfc.nasa.gov/W3Browse/all/xdeep2.html
5 https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=xdeep2&

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