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<ri:Resource created="2022-12-08T12:56:31Z" status="active" updated="2025-06-13T15:25:00Z" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" 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/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" xsi:type="vs:CatalogService"><title>BHB stars reveal halo's metal-rich progenitor</title><shortName>J/MNRAS/486/378</shortName><identifier>ivo://CDS.VizieR/J/MNRAS/486/378</identifier><altIdentifier>doi:10.26093/cds/vizier.74860378</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Lancaster L.</name></creator><creator><name>Koposov S.E.</name></creator><creator><name>Belokurov V.</name></creator><creator><name>Evans N.W.</name></creator><creator><name>Deason A.J.</name></creator><date role="Updated">2024-08-19T20:18:20Z</date><date role="Created">2022-12-08T12:56:31Z</date><contact><name>CDS support team</name><address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address><email>cds-question@unistra.fr</email></contact></curation><content><subject>milky-way-galaxy</subject><subject>halo-stars</subject><subject>horizontal-branch-stars</subject><subject>proper-motions</subject><subject>radial-velocity</subject><subject>stellar-distance</subject><subject>visible-astronomy</subject><subject>sloan-photometry</subject><description>Using the data from the Sloan Digital Sky Survey and the Gaia satellite, we assemble a pure sample of ~3000 blue horizontal branch (BHB) stars with 7D information, including positions, velocities, and metallicities. We demonstrate that, as traced with BHBs, the Milky Way's stellar halo is largely unmixed and cannot be well represented with a conventional Gaussian velocity distribution. A single-component model fails because the inner portions of the halo are swamped with metal-rich tidal debris from an ancient, head-on collision, known as the 'Gaia Sausage'. Motivated by the data, we build a flexible mixture model that allows us to track the evolution of the halo make-up across a wide range of radii. It is built from two components, one representing the radially anisotropic Sausage stars with their lobed velocity distribution, and the other representing a more metal-poor and more isotropic component built up from minor mergers. We show that inside 25kpc the 'Sausage' contributes at least 50 per cent of the Galactic halo. The fraction of 'Sausage' stars diminishes sharply beyond 30kpc, which is the long-established break radius of the classical stellar halo.</description><source format="bibcode">2019MNRAS.486..378L</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/486/378</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource>Conesearch service</relatedResource></relationship><relationship><relationshipType>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/I/345">I/345 : Gaia DR2 (Gaia Collaboration, 2018)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/V/139">V/139 : The SDSS Photometric Catalog, Release 8</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/738/79">J/ApJ/738/79 : 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36806 36809 36811 36861 36863 45046 45050 45052 45054-45055 48857 48859 48862-48863 48879 48892 48894 49011-49012 49014-49015 49017 49019-49020 49022 49079 49085 49129</spatial><spectral>2.85864675833786e-19 6.090060298487514e-19</spectral><footprint ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/486/378?format=ascii</footprint><waveband>Optical</waveband></coverage><tableset><schema><name>default</name><table><name>J/MNRAS/486/378/bhball</name><description>Blue Horizontal Branch stars in the Stellar Halo of the Milky Way</description><column><name>SimbadName</name><description>Simbad column added by the CDS</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="28*">char</dataType><flag>nullable</flag></column><column><name>Au</name><description>Dust extinction in the u-band (3)</description><unit>mag</unit><ucd>phys.absorption</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Ag</name><description>Dust extinction in the g-band (3)</description><unit>mag</unit><ucd>phys.absorption</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Ar</name><description>Dust extinction in the r-band (3)</description><unit>mag</unit><ucd>phys.absorption</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>bHg</name><description>Line width of the H{gamma} line of the star (2)</description><unit>0.1nm</unit><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>cHg</name><description>Line shape of the H{gamma} line of the star (2)</description><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>epsi</name><description>Astrometric excess noise from Gaia DR2 (1)</description><unit>mas</unit><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>sepsi</name><description>Astrometric excess noise significance (1)</description><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>plx</name><description>Parallax (1)</description><unit>mas</unit><ucd>pos.parallax.trig</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_plx</name><description>Error on plx (1)</description><unit>mas</unit><ucd>stat.error;pos.parallax</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>pmRAplxcor</name><description>Correlation between pmRA and plx (1)</description><ucd>pos.pm;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>pmDEplxcor</name><description>Correlation between pmDE and plx (1)</description><ucd>pos.pm;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Rgal</name><description>Galactocentric radial distance (4)</description><unit>kpc</unit><ucd>pos.distance;pos.galactocentric</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>varRgal</name><description>Variance in the measurement of Rgal (4)</description><unit>kpc**2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Vlon</name><description>Galactocentric longitudinal velocity (4)</description><unit>km/s</unit><ucd>phys.veloc;pos.galactocentric</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>varVlon</name><description>Variance in the measurement of Vlon (4)</description><unit>km**2.s**-2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Vlat</name><description>Galactocentric latitudinal velocity (4)</description><unit>km/s</unit><ucd>phys.veloc;pos.galactocentric</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>varVlat</name><description>Variance in the measurement of Vlat (4)</description><unit>km**2.s**-2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RVgal</name><description>Galactocentric radial velocity (4)</description><unit>km/s</unit><ucd>spect.dopplerVeloc;pos.galactocentric</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RVgalvar</name><description>Variance in the measurement of RVgal (4)</description><unit>km**2.s**-2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RgalVloncov</name><description>Covariance between Rgal and Vlon (4)</description><unit>kpc.km/s</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RgalVlatcov</name><description>Covariance between Rgal and Vlat (4)</description><unit>kpc.km/s</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RgalRVgalcov</name><description>Covariance between Rgal and RVgal (4)</description><unit>kpc.km/s</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VlonVlatcov</name><description>Covariance between Vlon and Vlat (4)</description><unit>km**2.s**-2</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VlonRVgalcov</name><description>Covariance between Vlon and RVgal (4)</description><unit>km**2.s**-2</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VlatRVgalcov</name><description>Covariance between Vlat and RVgal (4)</description><unit>km**2.s**-2</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RA_ICRS</name><description>Right ascension (ICRS) Ep=2015.5 (1)</description><unit>deg</unit><ucd>pos.eq.ra;meta.main</ucd></column><column><name>_RA.icrs</name><description>Right ascension (ICRS) at Epoch=J2000, proper motions taken into account</description><unit>deg</unit><ucd>pos.eq.ra</ucd><flag>nullable</flag><flag>indexed</flag></column><column><name>_DE.icrs</name><description>Declination (ICRS) at Epoch=J2000, proper motions taken into account</description><unit>deg</unit><ucd>pos.eq.dec</ucd><flag>nullable</flag><flag>indexed</flag></column><column><name>VRA</name><description>Physical space velocity in the direction of increasing right ascension (4)</description><unit>km/s</unit><ucd>phys.veloc</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>umag</name><description>SDSS PSF magnitude in u-band (3)</description><unit>mag</unit><ucd>phot.mag;em.opt.U</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>VRAvar</name><description>Variance in the measurement of VRA (4)</description><unit>km**2.s**-2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VDE</name><description>Physical space velocity in the direction of increasing declination (4)</description><unit>km/s</unit><ucd>phys.veloc</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>vDEvar</name><description>Variance in the measurement of VDE (4)</description><unit>km**2.s**-2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VRAVDEcov</name><description>Covariance between VRA and VDE (4)</description><unit>km**2.s**-2</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>GaiaDR2</name><description>Display the Gaia DR2 data (Gaia Collaboration 2018, Cat. I/345)</description><ucd>meta.ref.url</ucd><dataType xsi:type="vs:VOTableType" arraysize="*">char</dataType></column><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>e_RA_ICRS</name><description>Error on RAdeg (1)</description><unit>mas</unit><ucd>stat.error;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>DE_ICRS</name><description>Declination (ICRS) Ep=2015.5 (1)</description><unit>deg</unit><ucd>pos.eq.dec;meta.main</ucd></column><column><name>e_DE_ICRS</name><description>Error on DEdeg (1)</description><unit>mas</unit><ucd>stat.error;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>pmRA</name><description>Proper motion in right ascension (pmRA*cosDE) (1)</description><unit>mas/yr</unit><ucd>pos.pm;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_pmRA</name><description>Error on pmRA</description><unit>mas/yr</unit><ucd>stat.error;pos.pm;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>pmDE</name><description>Proper motion in declination (1)</description><unit>mas/yr</unit><ucd>pos.pm;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_pmDE</name><description>Error on pmDE</description><unit>mas/yr</unit><ucd>stat.error;pos.pm;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>pmRApmDEcor</name><description>Correlation between pmRA and pmDE (1)</description><ucd>pos.pm;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RV</name><description>Heliocentric radial velocity (2)</description><unit>km/s</unit><ucd>spect.dopplerVeloc;pos.heliocentric</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_RV</name><description>Error on RV (2)</description><unit>km/s</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>logDist</name><description>Logarithm of the heliocentric distance to the star (4)</description><unit>log(kpc)</unit><ucd>pos.distance;pos.heliocentric</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_logDist</name><description>Error on logDist (4)</description><unit>log(kpc)</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>[Fe/H]</name><description>Iron to hydrogen abundance ratio relative to solar (3)</description><unit>log(Sun)</unit><ucd>phys.abund.Fe;arith.ratio</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_[Fe/H]</name><description>Error on [Fe/H] (3)</description><unit>log(Sun)</unit><ucd>stat.error;phys.abund.Fe</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_umag</name><description>Error on umag (3)</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>gmag</name><description>SDSS PSF magnitude in g-band (3)</description><unit>mag</unit><ucd>phot.mag;em.opt.B</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_gmag</name><description>Error on gmag (3)</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>rmag</name><description>SDSS PSF magnitude in r-band (3)</description><unit>mag</unit><ucd>phot.mag;em.opt.R</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_rmag</name><description>Error on rmag (3)</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column></table><table><name>J/MNRAS/486/378/bhbfilt</name><description>Blue Horizontal Branch stars in the Stellar Halo of the Milky Way (Sagittarius stream removed)</description><column><name>Ag</name><description>Dust extinction in the g-band (3)</description><unit>mag</unit><ucd>phys.absorption</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>e_RA_ICRS</name><description>Error on RAdeg (1)</description><unit>mas</unit><ucd>stat.error;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>DE_ICRS</name><description>Declination (ICRS) Ep=2015.5 (1)</description><unit>deg</unit><ucd>pos.eq.dec;meta.main</ucd></column><column><name>e_DE_ICRS</name><description>Error on DEdeg (1)</description><unit>mas</unit><ucd>stat.error;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>pmRA</name><description>Proper motion in right ascension (pmRA*cosDE) (1)</description><unit>mas/yr</unit><ucd>pos.pm;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_pmRA</name><description>Error on pmRA</description><unit>mas/yr</unit><ucd>stat.error;pos.pm;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>pmDE</name><description>Proper motion in declination (1)</description><unit>mas/yr</unit><ucd>pos.pm;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_pmDE</name><description>Error on pmDE</description><unit>mas/yr</unit><ucd>stat.error;pos.pm;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>pmRApmDEcor</name><description>Correlation between pmRA and pmDE (1)</description><ucd>pos.pm;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RV</name><description>Heliocentric radial velocity (2)</description><unit>km/s</unit><ucd>spect.dopplerVeloc;pos.heliocentric</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_RV</name><description>Error on RV (2)</description><unit>km/s</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>logDist</name><description>Logarithm of the heliocentric distance to the star (4)</description><unit>log(kpc)</unit><ucd>pos.distance;pos.heliocentric</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_logDist</name><description>Error on logDist (4)</description><unit>log(kpc)</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>[Fe/H]</name><description>Iron to hydrogen abundance ratio relative to solar (3)</description><unit>log(Sun)</unit><ucd>phys.abund.Fe;arith.ratio</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_[Fe/H]</name><description>Error on [Fe/H] (3)</description><unit>log(Sun)</unit><ucd>stat.error;phys.abund.Fe</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>umag</name><description>SDSS PSF magnitude in u-band (3)</description><unit>mag</unit><ucd>phot.mag;em.opt.U</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_umag</name><description>Error on umag (3)</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>gmag</name><description>SDSS PSF magnitude in g-band (3)</description><unit>mag</unit><ucd>phot.mag;em.opt.B</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_gmag</name><description>Error on gmag (3)</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>rmag</name><description>SDSS PSF magnitude in r-band (3)</description><unit>mag</unit><ucd>phot.mag;em.opt.R</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_rmag</name><description>Error on rmag (3)</description><unit>mag</unit><ucd>stat.error;phot.mag</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Au</name><description>Dust extinction in the u-band (3)</description><unit>mag</unit><ucd>phys.absorption</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Ar</name><description>Dust extinction in the r-band (3)</description><unit>mag</unit><ucd>phys.absorption</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>bHg</name><description>Line width of the H{gamma} line of the star (2)</description><unit>0.1nm</unit><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>cHg</name><description>Line shape of the H{gamma} line of the star (2)</description><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>epsi</name><description>Astrometric excess noise from Gaia DR2 (1)</description><unit>mas</unit><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>sepsi</name><description>Astrometric excess noise significance (1)</description><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>plx</name><description>Parallax (1)</description><unit>mas</unit><ucd>pos.parallax.trig</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_plx</name><description>Error on plx (1)</description><unit>mas</unit><ucd>stat.error;pos.parallax</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>pmRAplxcor</name><description>Correlation between pmRA and plx (1)</description><ucd>pos.pm;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>varVlon</name><description>Variance in the measurement of Vlon (4)</description><unit>km**2.s**-2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Vlat</name><description>Galactocentric latitudinal velocity (4)</description><unit>km/s</unit><ucd>phys.veloc;pos.galactocentric</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>varVlat</name><description>Variance in the measurement of Vlat (4)</description><unit>km**2.s**-2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RVgalvar</name><description>Variance in the measurement of RVgal (4)</description><unit>km**2.s**-2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RgalVloncov</name><description>Covariance between Rgal and Vlon (4)</description><unit>kpc.km/s</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RgalVlatcov</name><description>Covariance between Rgal and Vlat (4)</description><unit>kpc.km/s</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RgalRVgalcov</name><description>Covariance between Rgal and RVgal (4)</description><unit>kpc.km/s</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VlonVlatcov</name><description>Covariance between Vlon and Vlat (4)</description><unit>km**2.s**-2</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VlonRVgalcov</name><description>Covariance between Vlon and RVgal (4)</description><unit>km**2.s**-2</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VlatRVgalcov</name><description>Covariance between Vlat and RVgal (4)</description><unit>km**2.s**-2</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VRA</name><description>Physical space velocity in the direction of increasing right ascension (4)</description><unit>km/s</unit><ucd>phys.veloc</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VRAvar</name><description>Variance in the measurement of VRA (4)</description><unit>km**2.s**-2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VDE</name><description>Physical space velocity in the direction of increasing declination (4)</description><unit>km/s</unit><ucd>phys.veloc</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>vDEvar</name><description>Variance in the measurement of VDE (4)</description><unit>km**2.s**-2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>VRAVDEcov</name><description>Covariance between VRA and VDE (4)</description><unit>km**2.s**-2</unit><ucd>stat.covariance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>GaiaDR2</name><description>Display the Gaia DR2 data (Gaia Collaboration 2018, Cat. I/345)</description><ucd>meta.ref.url</ucd><dataType xsi:type="vs:VOTableType" arraysize="*">char</dataType></column><column><name>RA_ICRS</name><description>Right ascension (ICRS) Ep=2015.5 (1)</description><unit>deg</unit><ucd>pos.eq.ra;meta.main</ucd></column><column><name>_RA.icrs</name><description>Right ascension (ICRS) at Epoch=J2000, proper motions taken into account</description><unit>deg</unit><ucd>pos.eq.ra</ucd><flag>nullable</flag><flag>indexed</flag></column><column><name>_DE.icrs</name><description>Declination (ICRS) at Epoch=J2000, proper motions taken into account</description><unit>deg</unit><ucd>pos.eq.dec</ucd><flag>nullable</flag><flag>indexed</flag></column><column><name>pmDEplxcor</name><description>Correlation between pmDE and plx (1)</description><ucd>pos.pm;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Rgal</name><description>Galactocentric radial distance (4)</description><unit>kpc</unit><ucd>pos.distance;pos.galactocentric</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>varRgal</name><description>Variance in the measurement of Rgal (4)</description><unit>kpc**2</unit><ucd>stat.variance</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Vlon</name><description>Galactocentric longitudinal velocity (4)</description><unit>km/s</unit><ucd>phys.veloc;pos.galactocentric</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RVgal</name><description>Galactocentric radial velocity (4)</description><unit>km/s</unit><ucd>spect.dopplerVeloc;pos.galactocentric</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column></table></schema></tableset></ri:Resource>