J/MNRAS/478/3809ivo://CDS.VizieR/J/MNRAS/478/3809doi:10.26093/cds/vizier.74783809CDSSchonrich R.Dehnen W.2025-11-27T20:04:31Z2021-12-10T13:40:59ZCDS support team

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

cds-question@unistra.frmilky-way-galaxystellar-distancevisible-astronomyWe derive unbiased distance estimates for the Gaia-TGAS data set by correcting for the bias due to the distance dependence of the selection function, which we measure directly from the data. From these distances and proper motions, we estimate the vertical and azimuthal velocities, W and V_{phi}_, and angular momentum L_z_ for stars in the Galactic centre and anticentre directions. The resulting mean vertical motion W^-^ hows a linear increase with both V_{phi}_ and L_z_ at 10{sigma} significance. Such a trend is expected from and consistent with the known Galactic warp. This signal extends to stars with guiding centre radii R_g_<R_0_, placing the onset of the warp at R<=7kpc. At equally high significance, we detect a previously unknown wave-like pattern of W^-^ over guiding centre R_g_ with an amplitude ~1km/s and a wavelength ~2.5kpc. This pattern is present in both the centre and anticentre directions, consistent with a winding (corrugated) warp or bending wave, likely related to known features in the outer disc (TriAnd and Monoceros overdensities), and may be caused by the interaction with the Sgr dwarf galaxy ~1Gyr ago. The only significant deviation from this simple fit is a stream-like feature near R_g_~9kpc (|L_z_|~2150kpc.km/s).2018MNRAS.478.3809Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/478/3809CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/337 : Gaia DR1 (Gaia Collaboration, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/478/3809https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/478/3809http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/478/3809https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/478/3809https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/478/3809http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/478/3809GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/478/3809/tgasdist (TGAS distance catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/478/3809/tgasdist?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/478/3809/tgasdist?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/478/3809/tgasdist?GETtext/xml+votable180.050000true45.0341581450.235600850010.0055555555555555560/7 9 1/0 3-4 6-7 9-11 13-16 20 22-23 27 32-34 40 43-44 46 2/5-9 11 20 23 33-35 50-51 68-69 71 74-76 78-79 84 86-87 96 98 100 104-105 140-141 143 166 169-171 180-181 183 189-191 3/17-19 40-42 84-85 87 89-91 128-130 192 194-195 197-199 281-282 289-294 308-309 311 340 342-343 389-391 396 398-399 404 406 409-413 415 425-430 568 570-571 656 658-659 661 663 668-670 672-673 675 728-730 752 754 4/64-66 172 174-175 344-345 347 352 354-355 524 526-527 772-773 775 784 786-787 1120 1122 1132-1134 1152-1154 1180 1182-1183 1240-1242 1364 1366-1367 1552-1554 1588-1589 1591 1620-1621 1623 1628 1630 1632-1634 1657-1659 1696-1697 1699 1725 1727 2276-2277 2279 2628 2630-2631 2641-2642 2648 2650-2651 2684-2686 2696 2698 2924 2926-2927 3013 3021-3023 5/268 270-271 692 694-695 1384 1387 1412-1413 1415 2100-2102 3097-3099 3140-3141 3143 4484 4486-4487 4492-4494 4540-4542 4621-4623 4724-4726 4972-4974 5460-5461 5463 6220-6221 6223 6361-6363 6488 6490-6491 6517 6519 6524 6526 6540-6541 6543 6625-6627 6792 6794-6795 6896-6897 6904-6906 9112-9113 9115 10516 10518-10519 10561 10563 10572-10573 10575 10596 10598 10749-10751 10788-10789 10791 10797-10799 11700-11702 12048 12050-12051 12056 12058-12059 12061-12063 12080-12082 6/1077-1079 2772-2774 5540-5541 5543-5544 5546-5547 5656 5658-5659 8412-8413 8415 12384-12386 12568-12569 12571 17941-17943 17980-17982 18172-18174 18480-18481 18483 18908-18910 19900-19901 19903 21848-21849 21851 24888-24890 25440-25442 25957-25958 26065-26067 26072 26074-26075 26101-26103 26108 26110 26168-26170 26496-26497 26499 27172 27174-27175 27592-27594 27597-27599 27628 27630-27631 36456 36458-36459 42068 42070-42071 42240-42241 42243 42248 42250-42251 42296-42297 42299 42388-42389 42391 42396-42397 42399 42994-42995 43160-43162 43184 43186-43187 46813 46815 48197 48199 48228 48230-48231 48240-48241 48243 48335https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/478/3809?format=asciiOpticaldefaultJ/MNRAS/478/3809/tgasdistTGAS distance catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSolIDGaia DR1 Solution IDmeta.idGaiaDR1Gaia DR1 Source IDmeta.id;meta.mainPlxGaia DR1 Absolute barycentric stellar parallaxmaspos.parallax.trigdoublee_PlxGaia DR1 Absolute barycentric stellar parallax errormasstat.error;pos.parallaxdoubleGLON[-180/180] Galactic longitudedegpos.galactic.lonindexedGLAT[-90/90] Galactic latitudedegpos.galactic.latindexedDistExpected distancekpcpos.distancedoublee_DistExpected distance errorkpcstat.errordoubleSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.raindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decindexed