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<ri:Resource created="2026-10-09T00:00:00" status="active" updated="2026-10-09T00:00:00" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:stc="http://www.ivoa.net/xml/STC/stc-v1.30.xsd" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ivoa.net/xml/ConeSearch/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/ConeSearch.xsd http://www.ivoa.net/xml/STC/stc-v1.30.xsd http://vo.ari.uni-heidelberg.de/docs/schemata/stc-v1.30.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd http://www.w3.org/1999/xlink http://vo.ari.uni-heidelberg.de/docs/schemata/xlink.xsd" xsi:type="vs:CatalogService">
  <title>Radio-Selected Extended Chandra Deep Field South Source Catalog</title>
  <shortName>ECDFSRSSAM</shortName>
  <identifier>ivo://nasa.heasarc/ecdfsrssam</identifier>
  <curation>
    <publisher ivo-id="ivo://nasa.heasarc/ASD">NASA/GSFC HEASARC</publisher>
    <creator>
      <name>Vattakunnel et al.</name>
    </creator>
    <contributor/>
    <date>2026-10-09</date>
    <contact>
      <name>NASA/GSFC HEASARC help desk</name>
      <email>heasarc-vo at athena.gsfc.nasa.gov</email>
    </contact>
  </curation>
  <content>
    <subject>Survey Source</subject>
    <description>
      In order to trace the instantaneous star formation rate (SFR) at high redshift, and thus help in understanding the relation between the different emission mechanisms related to star formation, the authors have combined the recent 4-Ms Chandra X-ray data and the deep Very Large Array radio data in the Extended Chandra Deep Field-South (E-CDF-S) region. They find 268 sources detected both in the X-ray and radio bands. The availability of redshifts for ~ 95% of the sources in their sample allows them to derive reliable luminosity estimates and the intrinsic properties from X-ray analysis for the majority of the objects. The present table lists the X-ray properties and redshifts of these 268 radio-selected sources. In the E-CDF-S area, the authors have two sets of X-ray data obtained with Chandra. The most important is a 4-Ms exposure observation resulting from the co-addition of 54 individual Chandra ACIS-I exposures from 1999 October to 2010 July, with centers spaced within a few arcseconds of RA = 03:32:28.80, Dec = -27:48:23 (J2000). The authors use the data from the new VLA program which provides deep, high-resolution 1.4-GHz imaging across the full E-CDF-S, consisting of a six-pointing mosaic of 240 h spanning 48 d of individual 5-h observations (Miller et al., 2008, ApJS, 179, 114). The E-CDF-S area has been targeted by a large number of spectroscopic surveys. For the X-ray sources, the authors use the spectroscopic redshifts published in Xue et al. (2011, ApJS, 195, 10). This table was created by the HEASARC in May 2013 based on &amp;lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/420/2190"&amp;gt;CDS Catalog J/MNRAS/420/2190&amp;lt;/a&amp;gt; files table2.dat and table3.dat. This is a service provided by NASA HEASARC .
    </description>
    <source format="">
      2012MNRAS.420.2190V
    </source>
    <referenceURL>https://heasarc.gsfc.nasa.gov/W3Browse/all/ecdfsrssam.html</referenceURL>
    <type>Catalog</type>
    <contentLevel>Research</contentLevel>
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  </content>
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    <maxSR>180</maxSR>
    <maxRecords>99999</maxRecords>
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      <ra>52.93391667</ra>
      <dec>-28.08344444</dec>
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  <facility>CHANDRA</facility>
  <coverage>
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    <waveband>X-ray</waveband>
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        <name>ecdfsrssam</name>
        <description>
          Radio-Selected Extended Chandra Deep Field South Source Catalog
        </description>
        <column>
          <name>name</name>
          <description>
            Source Designation from Xue et al. or Lehmer et al.
          </description>
          <ucd>
            meta.id;meta.main
          </ucd>
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        <column>
          <name>ra</name>
          <description>
            Right Ascension
          </description>
          <unit>degree</unit>
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            pos.eq.ra;meta.main
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        <column>
          <name>dec</name>
          <description>
            Declination
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          <unit>degree</unit>
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            pos.eq.dec;meta.main
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        <column>
          <name>redshift</name>
          <description>
            Spectroscopic or Photometric Redshift
          </description>
          <ucd>
            src.redshift
          </ucd>
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          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>spectral_index</name>
          <description>
            Slope of the Intrinsic X-Ray Emission Modeled with a Power Law (Gamma)
          </description>
          <ucd>
            spect.index
          </ucd>
          <dataType xsi:type="vs:VOTableType">double</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>spectral_index_error</name>
          <description>
            RMS Uncertainty in Spectral Index
          </description>
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            stat.error;spect.index
          </ucd>
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          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>hb_lx</name>
          <description>
            Luminosity in the Hard (2-10keV) X-Ray Band
          </description>
          <unit>erg/s</unit>
          <ucd>
            phys.luminosity;em.X-ray.medium
          </ucd>
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          <flag>
            nullable
          </flag>
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        <column>
          <name>hb_lx_error</name>
          <description>
            RMS Uncertainty in Hard X-Ray Luminosity
          </description>
          <unit>erg/s</unit>
          <ucd>
            stat.error;phys.luminosity;em.X-ray.medium
          </ucd>
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          <flag>
            nullable
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        <column>
          <name>sb_lx_error</name>
          <description>
            RMS Uncertainty in Soft X-Ray Luminosity
          </description>
          <unit>erg/s</unit>
          <ucd>
            stat.error;phys.luminosity;em.X-ray.soft
          </ucd>
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          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>sb_lx</name>
          <description>
            Luminosity in the Soft (0.5-2keV) X-Ray Band
          </description>
          <unit>erg/s</unit>
          <ucd>
            phys.luminosity;em.X-ray.soft
          </ucd>
          <dataType xsi:type="vs:VOTableType">double</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>bii</name>
          <description>
            Galactic Latitude
          </description>
          <unit>degree</unit>
          <ucd>
            pos.galactic.lat
          </ucd>
          <dataType xsi:type="vs:VOTableType">double</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>nh_limit</name>
          <description>
            Limit Flag for Hydrogen Column Density
          </description>
          <ucd>
            meta.code;phys.columnDensity
          </ucd>
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          <flag>
            nullable
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        <column>
          <name>nh_neg_err</name>
          <description>
            Negative Error for Hydrogen Column Density
          </description>
          <unit>cm^-2</unit>
          <ucd>
            stat.error;phys.columnDensity
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            nullable
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          <name>nh_pos_err</name>
          <description>
            Positive Error for Hydrogen Column Density
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          <unit>cm^-2</unit>
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            stat.error;phys.columnDensity
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          <name>nh</name>
          <description>
            Hydrogen Column Density
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          <unit>cm^-2</unit>
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            phys.columnDensity
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          <name>lii</name>
          <description>
            Galactic Longitude
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          <unit>degree</unit>
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            pos.galactic.lon
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            System unit vector column
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            System unit vector column
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          <description>
            System index column
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