J/ApJ/847/123ivo://CDS.VizieR/J/ApJ/847/123doi:10.26093/cds/vizier.18470123CDSPearl A.N.Newberg H.JoCarlin J.L.Smith R.F.2018-10-22T13:11:25Z2018-09-10T09:45:36ZCDS support team

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

cds-question@unistra.frastrometrymilky-way-galaxysurveysWe confirm, quantify, and provide a table of the coherent velocity substructure of the Milky Way disk within 2kpc of the Sun toward the Galactic anticenter, with a 0.2kpc resolution. We use the radial velocities of ~340000 F-type stars obtained with the Guoshoujing Telescope (also known as the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST), and proper motions derived from the PPMXL catalog. The PPMXL proper motions have been corrected to remove systematic errors by subtracting the average proper motions of galaxies and QSOs that have been confirmed in the LAMOST spectroscopic survey, and that are within 2.5{deg} of the star's position. We provide the resulting table of systematic offsets derived from the PPMXL proper motion measurements of extragalactic objects identified in the LAMOST spectroscopic survey. Using the corrected phase-space stellar sample, we find statistically significant deviations in the bulk disk velocity of 20km/s or more in the three-dimensional velocities of Galactic disk stars. The bulk velocity varies significantly over length scales of half a kiloparsec or less. The rotation velocity of the disk increases by 20km/s from the Sun's position to 1.5kpc outside the solar circle. Disk stars in the second quadrant, within 1kpc of the Sun, are moving radially toward the Galactic center and vertically toward a point a few tenths of a kiloparsec above the Galactic plane; looking down on the disk, the stars appear to move in a circular streaming motion with a radius of the order of 1kpc.2017ApJ...847..123Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/847/123CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/317 : The PPMXL Catalog (Roeser+ 2010)V/146 : LAMOST DR1 catalogs (Luo+, 2015)V/149 : LAMOST DR2 catalogs (Luo+, 2016)V/153 : LAMOST DR4 catalogs (Luo+, 2018)J/A+AS/103/427 : Second Quito Astrolabe Catalogue (Kolesnik+ 1994)J/ApJ/588/824 : Velocities of blue stars near (l,b)=(198,-27) (Yanny+, 2003)J/ApJ/688/237 : Disk corrugations in IC 2233 (Matthews+, 2008)J/AJ/137/4377 : List of SEGUE plate pairs (Yanny+, 2009)J/A+A/569/A125 : Spiral structure of the Milky Way (Hou+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/847/123https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/847/123http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/847/123https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/847/123https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/847/123http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/847/123GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/847/123/table1 (*Data from our proper motion correction table)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/847/123/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/847/123/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/847/123/table1?GETtext/xml+votable180.050000true0.125-14.8750.0055555555555555561/0 1 2 4 5 6 8 9 10 12 13 14 19 23 27 31 2/12 28 44 60 69 70 71 73 74 75 85 86 87 89 90 91 101 102 103 105 106 107 117 118 119 121 122 123 3/52 53 54 56 57 58 116 117 118 120 121 122 180 181 182 184 185 186 244 245 246 248 249 250 269 270 271 273 274 275 289 290 291 333 334 335 337 338 339 353 354 355 397 398 399 401 402 403 417 418 419 461 462 463 465 466 467 481 482 483 573 574 575 637 638 639 701 702 703 765 766 767 4/220 221 222 236 237 238 240 241 242 476 477 478 492 493 494 496 497 498 732 733 734 748 749 750 752 753 754 988 989 990 1004 1005 1006 1008 1009 1010 1055 1071 1075 1091 1155 1311 1327 1331 1347 1411 1567 1583 1587 1603 1667 1823 1839 1843 1859 1923 2271 2287 2291 2527 2543 2547 2783 2799 2803 3039 3055 3059 5/892 956 972 976 992 1916 1980 1996 2000 2016 2940 3004 3020 3024 3040 3964 4028 4044 4048 4064 4213 4214 4215 4217 4218 4219 4277 4278 4279 4281 4282 4283 4293 4294 4295 4297 4298 4299 4357 4358 4359 4361 4362 4363 4613 4614 4615 4617 4618 4619 5237 5238 5239 5241 5242 5243 5301 5302 5303 5305 5306 5307 5317 5318 5319 5321 5322 5323 5381 5382 5383 5385 5386 5387 5637 5638 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40739 44415 44479 44495 44499 44515 44671 44735 44751 44755 44771 44815 44819 44835 48511 48575 48591 48595 48611 48767 48831 48847 48851 48867 48911 48915 48931https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/847/123?format=asciidefaultJ/ApJ/847/123/table1*Data from our proper motion correction tablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Rigth ascension; center value {alpha} of the bin (J2000) (ra) (1)degpos.eq.ra;meta.mainindexedDEJ2000[-15/75] Declination; center value {delta} of the bin (J2000) (dec) (1)degpos.eq.dec;meta.mainindexedpmraCor[-12/15]? Proper motion correction in RA (pmra_shift)mas/yrarith.factordoublenullablepmdeCor[-10.3/18.3]? Proper motion correction in DEC (pmde_shift)mas/yrarith.factordoublenullablee_pmraCor[0.08/12]? Uncertainty on pmraCor (pmra_se)mas/yrstat.errordoublenullablee_pmdeCor[0.1/10]? Uncertainty on pmdeCor (pmde_se)mas/yrstat.errordoublenullableJ/ApJ/847/123/fig11Data behind figure 11R[8.1/9.9] R Galactic coordinate (1)kpcpos.cartesian.x;pos.galacticfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintZ[-1.3/1.5] Z Galactic coordinate (1)kpcpos.cartesian.z;pos.galacticfloattheta[-10.5/7.8] {theta} Galactic coordinate (1)degpos.cartesian.y;pos.galacticfloatcount[10/13365] Countmeta.numberintvr[-36.2/30] Galactic Standard of Rest velocity in Rkm/sphys.velocfloatvz[-26.1/37.5] Galactic Standard of Rest velocity in Zkm/sphys.velocfloatvtheta[-247.2/-159.6] Galactic Standard of Rest velocity in {theta}km/sphys.velocfloats_vr[0.2/21] vr uncertainty (vr_err)km/sstat.errorfloats_vz[0.1/23] vz uncertainty (vz_err)km/sstat.errorfloats_vtheta[0.1/18] vtheta uncertainty (vtheta_err)km/sstat.errorfloate_vr[0.7/8] One standard deviation in vr (vr_se)km/sstat.errorfloate_vz[0.6/9.1] One standard deviation in vz (vz_se)km/sstat.errorfloate_vtheta[0.7/9] One standard deviation in vtheta (vtheta_se)km/sstat.errorfloat