J/A+A/621/A48ivo://CDS.VizieR/J/A+A/621/A48doi:10.26093/cds/vizier.36210048CDSLopez-Corredoira M.Sylos Labini F.2019-01-29T13:56:22Z2019-01-14T15:27:23ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmilky-way-galaxyradial-velocitygalaxy-kinematicsThe Gaia Collaboration has used Gaia-DR2 sources with six-dimensional (6D) phase space information to derive kinematical maps within 5kpc of the Sun, which is a reachable range for stars with relative error in distance lower than 20%. Here we aim to extend the range of distances by a factor of two to three, thus adding the range of Galactocentric distances between 13kpc and 20kpc to the previous maps, with their corresponding error and root mean square values. We make use of the whole sample of stars of Gaia-DR2 including radial velocity measurements, which consists in more than seven million sources, and we apply a statistical deconvolution of the parallax errors based on the Lucy's inversion method of the Fredholm integral equations of the first kind, without assuming any prior. The new extended maps provide lots of new and corroborated information about the disk kinematics: significant departures of circularity in the mean orbits with radial Galactocentric velocities between -20 and +20km/s and vertical velocities between -10 and +10km/s; variations of the azimuthal velocity with position; asymmetries between the northern and the southern Galactic hemispheres, especially towards the anticenter that includes a larger azimuthal velocity in the south; and others. These extended kinematical maps can be used to investigate the different dynamical models of our Galaxy, and we will present our own analyses in the forthcoming second part of this paper. At present, it is evident that the Milky Way is far from a simple stationary configuration in rotational equilibrium, but is characterized by streaming motions in all velocity components with conspicuous velocity gradients.2019A&A...621A..48Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/621/A48CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/621/A48https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/621/A48http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/621/A48https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/621/A48https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/621/A48http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/621/A48GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/621/A48/fig12vzVertical component of the Galactocentric velocity Median (V) for -20{deg}<l<+20{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVzVertical component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VzError of Vzkm/sstat.errorfloats_Vzr.m.s. of Vzkm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig8vrRadial component of the Galactocentric velocity Median (V) for |b|<10{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatYgalGalactocentric Y coordinatekpcpos.cartesian.y;pos.galactocentricfloatVrRadial component of the Galactocentric velocitykm/sspect.dopplerVeloc;pos.galactocentricdoublee_VrError of Vrkm/sstat.errorfloats_Vrr.m.s. of Vrkm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig12vrRadial component of the Galactocentric velocity Median (V) for -20{deg}<l<+20{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVrRadial component of the Galactocentric velocitykm/sspect.dopplerVeloc;pos.galactocentricdoublee_VrError of Vrkm/sstat.errorfloats_Vrr.m.s. of Vrkm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig9vrRadial component of the Galactocentric velocity Median (V) for 160{deg}<l<200{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVrRadial component of the Galactocentric velocitykm/sspect.dopplerVeloc;pos.galactocentricdoublee_VrError of Vrkm/sstat.errorfloats_Vrr.m.s. of Vrkm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig9vzVertical component of the Galactocentric velocity Median (V) for 160{deg}<l<200{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVzVertical component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VzError of Vzkm/sstat.errorfloats_Vzr.m.s. of Vzkm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig10vrRadial component of the Galactocentric velocity Median (V) for 120{deg}<l<160{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVrRadial component of the Galactocentric velocitykm/sspect.dopplerVeloc;pos.galactocentricdoublee_VrError of Vrkm/sstat.errorfloats_Vrr.m.s. of Vrkm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig10vzVertical component of the Galactocentric velocity Median (V) for 120{deg}<l<160{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVzVertical component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VzError of Vzkm/sstat.errorfloats_Vzr.m.s. of Vzkm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig11vrRadial component of the Galactocentric velocity Median (V) for 200{deg}<l<240{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVrRadial component of the Galactocentric velocitykm/sspect.dopplerVeloc;pos.galactocentricdoublee_VrError of Vrkm/sstat.errorfloats_Vrr.m.s. of Vrkm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig11vpAzimuthal component of the Galactocentric velocity Median (V) for 200{deg}<l<240{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVphiAzimuthal component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VphiError of Vphikm/sstat.errorfloats_Vphir.m.s. of Vphikm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig16vr*Radial component of the Galactocentric velocity Median (V) for |b|<10{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatYgalGalactocentric Y coordinatekpcpos.cartesian.y;pos.galactocentricfloatVrRadial component of the Galactocentric velocitykm/sspect.dopplerVeloc;pos.galactocentricdoublee_VrError of Vrkm/sstat.errorfloats_Vrr.m.s. of Vrkm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig16vpAzimuthal component of the Galactocentric velocity Median (V) for |b|<10{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatYgalGalactocentric Y coordinatekpcpos.cartesian.y;pos.galactocentricfloatVphiAzimuthal component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VphiError of Vphikm/sstat.errorfloats_Vphir.m.s. of Vphikm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig16vzVertical component of the Galactocentric velocity Median (V) for |b|<10{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatYgalGalactocentric Y coordinatekpcpos.cartesian.y;pos.galactocentricfloatVzVertical component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VzError of Vzkm/sstat.errorfloats_Vzr.m.s. of Vzkm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig12vpAzimuthal component of the Galactocentric velocity Median (V) for -20{deg}<l<+20{deg}, Plx/e_Plx>1XgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVphiAzimuthal component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VphiError of Vphikm/sstat.errorfloats_Vphir.m.s. of Vphikm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig8vpAzimuthal component of the Galactocentric velocity Median (V) for |b|<10{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatYgalGalactocentric Y coordinatekpcpos.cartesian.y;pos.galactocentricfloatVphiAzimuthal component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VphiError of Vphikm/sstat.errorfloats_Vphir.m.s. of Vphikm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig8vzVertical component of the Galactocentric velocity Median (V) for |b|<10{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatYgalGalactocentric Y coordinatekpcpos.cartesian.y;pos.galactocentricfloatVzVertical component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VzError of Vzkm/sstat.errorfloats_Vzr.m.s. of Vzkm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig9vpAzimuthal component of the Galactocentric velocity Median (V) for 160{deg}<l<200{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVphiAzimuthal component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VphiError of Vphikm/sstat.errorfloats_Vphir.m.s. of Vphikm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig10vpAzimuthal component of the Galactocentric velocity Median (V) for 120{deg}<l<160{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVphiAzimuthal component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VphiError of Vphikm/sstat.errorfloats_Vphir.m.s. of Vphikm/sstat.stdev;instr.det.noisefloatJ/A+A/621/A48/fig11vzVertical component of the Galactocentric velocity Median (V) for 200{deg}<l<240{deg}, Plx/e_Plx>1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXgalGalactocentric X coordinatekpcpos.cartesian.x;pos.galactocentricfloatZgalGalactocentric Z coordinatekpcpos.cartesian.z;pos.galactocentricfloatVzVertical component of the Galactocentric velocitykm/sphys.veloc;pos.galactocentricdoublee_VzError of Vzkm/sstat.errorfloats_Vzr.m.s. of Vzkm/sstat.stdev;instr.det.noisefloat