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<ri:Resource created="2026-04-24T00:00:00" status="active" updated="2026-04-24T00:00:00" 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>6dFGS Galaxy Survey Final Redshift Release Catalog</title>
  <shortName>SIXDFGS</shortName>
  <identifier>ivo://nasa.heasarc/sixdfgs</identifier>
  <curation>
    <publisher ivo-id="ivo://nasa.heasarc/ASD">NASA/GSFC HEASARC</publisher>
    <creator>
      <name>Jones et al.</name>
    </creator>
    <contributor/>
    <date>2026-04-24</date>
    <contact>
      <name>NASA/GSFC HEASARC help desk</name>
      <email>heasarc-vo at athena.gsfc.nasa.gov</email>
    </contact>
  </curation>
  <content>
    <subject>Galaxy</subject>
    <description>
      The final redshift release of the 6dF Galaxy Survey (6dFGS) is a combined redshift and peculiar velocity survey over the southern sky (|b| &amp;gt; 10 degrees). Its 136,304 spectra have yielded 110,256 new extragalactic redshifts and a new catalogue of 125,071 galaxies making near-complete samples with limits in (K, H, J, r&amp;lt;sub&amp;gt;F&amp;lt;/sub&amp;gt;, b&amp;lt;sub&amp;gt;J&amp;lt;/sub&amp;gt;) (12.65, 12.95, 13.75, 15.60, 16.75). The median redshift of the survey is 0.053. The catalog includes basic data for the galaxies in the 6dFGS with redshifts, using the best 6dFGS redshifts (radial velocity quality flag Q =3 or 4) plus available redshifts from SDSS, 2dFGRS and ZCAT (124,647 entries in all). It supersedes the previous DR2 version (&amp;lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/VII/249"&amp;gt;CDS Cat. VII/249&amp;lt;/a&amp;gt;). The home page of of the 6dFGS database is &amp;lt;a href="http://www-wfau.roe.ac.uk/6dFGS"&amp;gt;http://www-wfau.roe.ac.uk/6dFGS&amp;lt;/a&amp;gt;. Any use of these data should explicitly state that they come from the Final Release of 6dFGS and cite both the 6dGS DR3 paper (Jones et al. 2009, MNRAS, 399, 683) as well as the original 6dFGS survey paper (Jones et al. 2004, MNRAS, 355, 747). This table was created by the HEASARC in March 2011 based on &amp;lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/VII/259"&amp;gt;CDS Catalog VII/259&amp;lt;/a&amp;gt; file 6dfgs.dat. This is a service provided by NASA HEASARC .
    </description>
    <source format="">
      2009MNRAS.399..683J
    </source>
    <referenceURL>https://heasarc.gsfc.nasa.gov/W3Browse/all/sixdfgs.html</referenceURL>
    <type>Catalog</type>
    <contentLevel>Research</contentLevel>
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        served-by
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        HEASARC TAP
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      <ra>25.40554167</ra>
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  <facility>GALAXY CATALOG</facility>
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      <table>
        <name>sixdfgs</name>
        <description>
          6dFGS Galaxy Survey Final Redshift Release Catalog
        </description>
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          <name>name</name>
          <description>
            Galaxy Survey Target Identification (6dFGS gJHHMMSS.s+DDMMSS)
          </description>
          <ucd>
            meta.id;meta.main
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          <name>ra</name>
          <description>
            Right Ascension
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          <unit>degree</unit>
          <ucd>
            pos.eq.ra;meta.main
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        <column>
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          <description>
            Declination
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          <unit>degree</unit>
          <ucd>
            pos.eq.dec;meta.main
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          <dataType xsi:type="vs:VOTableType">double</dataType>
          <flag>
            nullable
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        <column>
          <name>bj_mag</name>
          <description>
            Recalibrated b_J Magnitude
          </description>
          <unit>mag</unit>
          <ucd>
            phot.mag;em.opt.B
          </ucd>
          <dataType xsi:type="vs:VOTableType">double</dataType>
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            nullable
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        <column>
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          <description>
            SuperCOSMOS Star/Galaxy Classifier: 1=Galaxy, 2=Star, 3=Unclassifiable, 4=Noise
          </description>
          <ucd>
            meta.code;src.class
          </ucd>
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          <flag>
            nullable
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        <column>
          <name>radial_velocity</name>
          <description>
            Best Available Combined Recession Velocity cz
          </description>
          <unit>km/s</unit>
          <ucd>
            spect.dopplerVeloc
          </ucd>
          <dataType xsi:type="vs:VOTableType">int</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>radial_velocity_error</name>
          <description>
            Combined Uncertainty in Radial Velocity
          </description>
          <unit>km/s</unit>
          <ucd>
            stat.error;spect.dopplerVeloc
          </ucd>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>ref_radial_velocity</name>
          <description>
            Code Identifying Source of Redshift
          </description>
          <ucd>
            meta.ref;spect.dopplerVeloc
          </ucd>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
            nullable
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        </column>
        <column>
          <name>name_redshift_field</name>
          <description>
            Name of Redshift Field File Containing the Redshift
          </description>
          <ucd>
            meta.id;obs.field
          </ucd>
          <dataType xsi:type="vs:VOTableType">char</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>target_id</name>
          <description>
            Unique Target Identification Number in 6dFGS Database
          </description>
          <ucd>
            meta.id;src
          </ucd>
          <dataType xsi:type="vs:VOTableType">int</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>original_weight</name>
          <description>
            Original Weight Source Had for First Round of Fibre Allocation
          </description>
          <ucd>
            meta.code;obs
          </ucd>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>num_total_measures</name>
          <description>
            Number of 6dFGS Measurements (of Any Quality)
          </description>
          <ucd>
            meta.number;obs
          </ucd>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>specid_values</name>
          <description>
            SPECID Values of Redshifts Contributing to the Final Combined Redshift
          </description>
          <ucd>
            meta.id;obs
          </ucd>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
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        <column>
          <name>radial_velocity_compflag</name>
          <description>
            Comparison Flags Between Redshift Measurements
          </description>
          <ucd>
            meta.code;spect.dopplerVeloc
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          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
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        <column>
          <name>program_id</name>
          <description>
            Program Identification Number
          </description>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>rf_mag</name>
          <description>
            Recalibrated r_F Magnitude (RMAG)
          </description>
          <unit>mag</unit>
          <ucd>
            phot.mag;em.opt.R
          </ucd>
          <dataType xsi:type="vs:VOTableType">double</dataType>
          <flag>
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        <column>
          <name>lii</name>
          <description>
            Galactic Longitude
          </description>
          <unit>degree</unit>
          <ucd>
            pos.galactic.lon
          </ucd>
          <dataType xsi:type="vs:VOTableType">double</dataType>
          <flag>
            nullable
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        <column>
          <name>num_highq_measure</name>
          <description>
            Number of Measurements Used in Final Radial Velocity (of Quality 3 or 4 Only)
          </description>
          <ucd>
            meta.number;obs
          </ucd>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
            nullable
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        <column>
          <name>radial_velocity_qualflag</name>
          <description>
            Best Redshift Quality Value Available
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          <ucd>
            meta.code.qual;spect.dopplerVeloc
          </ucd>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
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        <column>
          <name>template_code</name>
          <description>
            Template Code(s)
          </description>
          <ucd>
            meta.code
          </ucd>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
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        </column>
        <column>
          <name>av</name>
          <description>
            Galactic Extinction in V Magnitudes (from Schlegel et al., 1998ApJ...500..525S)
          </description>
          <unit>mag</unit>
          <ucd>
            phys.absorption;em.opt.V
          </ucd>
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          <description>
            System unit vector column
          </description>
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          <description>
            System unit vector column
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          <dataType xsi:type="vs:VOTableType">double</dataType>
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          <description>
            System unit vector column
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          <description>
            System index column
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