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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>SMC Probable Member Stars Catalog</title>
  <shortName>SMCStars</shortName>
  <identifier>ivo://nasa.heasarc/smcstars</identifier>
  <curation>
    <publisher ivo-id="ivo://nasa.heasarc/ASD">NASA/GSFC HEASARC</publisher>
    <creator>
      <name>Azzopardi, Vigneau; Azzopardi, Breysacher</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>Star</subject>
    <description>
      An objective prism survey was conducted to discover probable members of the Small Magellanic Cloud. Interference filters were used to restrict the wavelength range and, hence, decrease the background and crowding. The limiting absolute magnitude of the survey is about -4.5. The 1975 paper listed 506 stars that show high luminosity characteristics; 193 of them had been confirmed by other authors. The 1979 paper added 14 additional probable members and photometric observations of 11 stars from the earlier paper that confirmed their membership. For completeness, four new Wolf-Rayet stars detected by Azzopardi and Breysacher (1979) were included. The catalog contains a catalog number in order of right ascension with the suffixes &amp;quot;a&amp;quot; or &amp;quot;b&amp;quot; used for the newer stars interpolated in the original list. Also included are the 1975 position, the MK spectral classification, the V magnitude, the (B-V) and (U-B) color indices, the number of observations, the identification chart number, and remarks indicating previous identifications. A later catalog of the Small Magellanic Could star members is also published by Azzopardi and Vigneau (1982A&amp;amp;AS...50..291A). This is a service provided by NASA HEASARC .
    </description>
    <source format="">
      1975A&amp;amp;AS...22..285A
    </source>
    <referenceURL>https://heasarc.gsfc.nasa.gov/W3Browse/all/smcstars.html</referenceURL>
    <type>Catalog</type>
    <contentLevel>Research</contentLevel>
    <relationship>
      <relationshipType>
        served-by
      </relationshipType>
      <relatedResource ivo-id="ivo://nasa.heasarc/services/xamin">
        HEASARC TAP
      </relatedResource>
    </relationship>
  </content>
  <capability standardID="ivo://ivoa.net/std/ConeSearch" xsi:type="cs:ConeSearch">
    <interface role="std" xsi:type="vs:ParamHTTP">
      <accessURL use="base">
        https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&amp;table=smcstars&amp;
      </accessURL>
      <queryType>GET</queryType>
      <resultType>text/xml</resultType>
    </interface>
    <maxSR>180</maxSR>
    <maxRecords>99999</maxRecords>
    <verbosity>true</verbosity>
    <testQuery>
      <ra>12.3934330852819</ra>
      <dec>-73.7023913098055</dec>
      <sr>0.0166666666666667</sr>
    </testQuery>
  </capability>
  <capability standardID="ivo://ivoa.net/std/TAP#aux">
    <interface xsi:type="vs:ParamHTTP" role="std">
      <accessURL use="base">
        https://heasarc.gsfc.nasa.gov/xamin/vo/tap
      </accessURL>
    </interface>
  </capability>
  <capability>
    <interface xsi:type="vs:ParamHTTP">
      <accessURL use="base">
        https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=smcstars
      </accessURL>
      <queryType>GET</queryType>
      <resultType>text/xml</resultType>
    </interface>
  </capability>
  <capability>
    <interface xsi:type="vr:WebBrowser">
      <accessURL use="full">
        https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_smcstars&amp;Action=More+Options&amp;Action=Parameter+Search&amp;ConeAdd=1
      </accessURL>
    </interface>
  </capability>
  <facility>STAR CATALOG</facility>
  <coverage>
    <stc:STCResourceProfile>
      <stc:AstroCoordSystem xlink:type="simple" xlink:href="ivo://STClib/CoordSys#UTC-ICRS-TOPO" id="_smcstars_UTC-ICRS-TOPO1bd91dcd551a3515943ff61c0620b9e9"/>
      <stc:AstroCoords coord_system_id="_smcstars_UTC-ICRS-TOPO1bd91dcd551a3515943ff61c0620b9e9">
        <stc:Position1D>
          
          <stc:Size pos_unit="deg">
            0.0166666666666667
          </stc:Size>
        </stc:Position1D>
      </stc:AstroCoords>
      <stc:AstroCoordArea coord_system_id="_smcstars_UTC-ICRS-TOPO1bd91dcd551a3515943ff61c0620b9e9">
        <stc:AllSky/>
      </stc:AstroCoordArea>
    </stc:STCResourceProfile>
    <waveband>Optical</waveband>
  </coverage>
  <tableset xsi:type="vs:TableSet">
    <schema>
      <name>public</name>
      <table>
        <name>smcstars</name>
        <description>
          SMC Probable Member Stars Catalog
        </description>
        <column>
          <name>name</name>
          <description>
            Catalog Designation
          </description>
          <ucd>
            meta.id;meta.main
          </ucd>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>ra</name>
          <description>
            Right Ascension
          </description>
          <unit>degree</unit>
          <ucd>
            pos.eq.ra;meta.main
          </ucd>
          <dataType xsi:type="vs:VOTableType">double</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>dec</name>
          <description>
            Declination
          </description>
          <unit>degree</unit>
          <ucd>
            pos.eq.dec;meta.main
          </ucd>
          <dataType xsi:type="vs:VOTableType">double</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>ra1975</name>
          <description>
            Right Ascension, Sexagesimal, 1975 Coordinates
          </description>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>dec1975</name>
          <description>
            Declination, Sexagesimal, 1975 Coordinates
          </description>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>spectral_type</name>
          <description>
            Spectral Type
          </description>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>bv_color</name>
          <description>
            B-V Magnitude
          </description>
          <ucd>
            phot.color;em.opt.B;em.opt.V
          </ucd>
          <dataType xsi:type="vs:VOTableType">float</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>chart1</name>
          <description>
            Finding Chart Number
          </description>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>"__x_ra_dec"</name>
          <description>
            System unit vector column
          </description>
          <dataType xsi:type="vs:VOTableType">double</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>"__y_ra_dec"</name>
          <description>
            System unit vector column
          </description>
          <dataType xsi:type="vs:VOTableType">double</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>"__z_ra_dec"</name>
          <description>
            System unit vector column
          </description>
          <dataType xsi:type="vs:VOTableType">double</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>"__row"</name>
          <description>
            System index column
          </description>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>vmag</name>
          <description>
            Visual Magnitude
          </description>
          <ucd>
            phot.mag;em.opt.V
          </ucd>
          <dataType xsi:type="vs:VOTableType">float</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>chart3</name>
          <description>
            Finding Chart Number
          </description>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>class</name>
          <description>
            Browse Object Classification
          </description>
          <ucd>
            src.class
          </ucd>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>vmag_uncert</name>
          <description>
            Visual Magnitude Uncertainty Flag
          </description>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <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
          </flag>
        </column>
        <column>
          <name>spectral_type_uncert</name>
          <description>
            Spectral Type Uncertainty Flag
          </description>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>chart2</name>
          <description>
            Finding Chart Number
          </description>
          <dataType xsi:type="vs:VOTableType">short</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>ub_color_uncert</name>
          <description>
            U-B Magnitude Uncertainty Flag
          </description>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>remarks</name>
          <description>
            Remark in the Original Publication
          </description>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>ub_color</name>
          <description>
            U-B Magnitude
          </description>
          <ucd>
            phot.color;em.opt.U;em.opt.B
          </ucd>
          <dataType xsi:type="vs:VOTableType">float</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>bv_color_uncert</name>
          <description>
            B-V Magnitude Uncertainty Flag
          </description>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>member</name>
          <description>
            "KM" if Star Already Stated as SMC Member
          </description>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>obs_flag</name>
          <description>
            Observations Indicator
          </description>
          <dataType xsi:type="vs:VOTableType">char</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>cat_number</name>
          <description>
            Number in the catalogue
          </description>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
            nullable
          </flag>
        </column>
        <column>
          <name>observations</name>
          <description>
            Number of Measurements
          </description>
          <dataType xsi:type="vs:VOTableType">short</dataType>
          <flag>
            nullable
          </flag>
        </column>
      </table>
    </schema>
  </tableset>
</ri:Resource>