J/ApJ/812/146ivo://CDS.VizieR/J/ApJ/812/146doi:10.26093/cds/vizier.18120146CDSMolloy M.Smith M.C.Evans N.W.Shen J.2017-01-23T22:00:00Z2016-03-02T14:54:48ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyastronomical-modelsWe extract the resonant orbits from an N-body bar that is a good representation of the Milky Way, using the method recently introduced by Molloy et al. (2015ApJ...804...80M). By decomposing the bar into its constituent orbit families, we show that they are intimately connected to the boxy-peanut shape of the density. We highlight the imprint due solely to resonant orbits on the kinematic landscape toward the Galactic center. The resonant orbits are shown to have distinct kinematic features and may be used to explain the cold velocity peak seen in the Apache Point Observatory Galactic Evolution Experiment commissioning data. We show that high velocity peaks are a natural consequence of the motions of stars in the 2:1 orbit family and that stars on other higher order resonances can contribute to the peaks. The locations of the peaks vary with bar angle and, with the tacit assumption that the observed peaks are due to the 2:1 family, we find that the locations of the high velocity peaks correspond to bar angles in the range 10{deg}<~{theta}_bar_<~25{deg}. However, some important questions about the nature of the peaks remain, such as their apparent absence in other surveys of the Bulge and the deviations from symmetry between equivalent fields in the north and south. We show that the absence of a peak in surveys at higher latitudes is likely due to the combination of a less prominent peak and a lower number density of bar supporting orbits at these latitudes.2015ApJ...812..146Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/812/146CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/216/12 : OGLE-III microlensing events (Wyrzykowski+, 2015)J/A+A/563/A15 : Metallicity and kinematics in Galactic bar (Babusiaux+, 2014)J/A+A/562/A66 : GIRAFFE Inner Bulge Survey (GIBS). I. (Zoccali+, 2014)J/ApJ/721/L28 : Red clump stars in Galactic Bulge from OGLE-III (Nataf+, 2010)J/ApJ/691/1387 : Spectroscopy of the Galactic bar. I. (Rangwala+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/812/146https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/812/146http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/812/146https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/812/146https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/812/146http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/812/146GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/812/146/table1 (*Line-of-sight velocity distributions for each of the APOGEE commissioning fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/812/146/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/812/146/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/812/146/table1?GETtext/xml+votable180.050000true273.8157-21.25230.0055555555555555566/28794 28888 28900 28912 29067 29107 29440 29458https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/812/146?format=asciidefaultJ/ApJ/812/146/table1*Line-of-sight velocity distributions for each of the APOGEE commissioning fieldsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLON[4/14] Galactic longitudedegpos.galactic.lonGLAT[-4.3/2] Galactic latitudedegpos.galactic.lattheta[10/25] Viewing angle of the bar ({theta}_bar_)degsrc.orbital.inclinationintAllpk[41/87.1] Peak of fit to all particles (1)km/sphys.velocfloat21pk[128/253.1] Maximum peak of three Gaussian fit (2)km/sphys.velocfloat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed