J/ApJ/688/237ivo://CDS.VizieR/J/ApJ/688/237doi:10.26093/cds/vizier.16880237CDSMatthews L.D.Uson J.M.2017-07-06T06:26:02Z2011-01-25T14:44:58ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesultraviolet-astronomyh-i-line-emissioninterstellar-mediumWe recently reported the discovery of a regular corrugation pattern in the HI disk of the isolated, edge-on spiral galaxy IC 2233. Here we present measurements of the vertical structure of this galaxy at several additional wavelengths, ranging from the far-ultraviolet to the far-infrared. We find that undular patterns with amplitude <~5"(<~250pc) are visible in a variety of Population I tracers in IC 2233, including the young to intermediate-age stars, the HII regions, and the dust. However, the vertical excursions become less pronounced in the older stellar populations traced by the mid-infrared light. This suggests that the process leading to the vertical displacements may be linked with the regulation of star formation in the galaxy. We have also identified a relationship between the locations of the density corrugations and small-amplitude (<~5km/s) velocity undulations in the HI rotation curve. We are able to exclude several possible mechanisms for the origin of the observed corrugations, including tidal interaction from a companion, Parker instabilities, or a galactic bore. Global gravitational instabilities appear to be the most likely explanation, although local perturbations may also be important.2008ApJ...688..237Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/688/237CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/173/185 : GALEX ultraviolet atlas of nearby galaxies (Gil de Paz+, 2007)J/A+A/442/137 : HI observations of WHISP disk galaxies (Noordermeer+, 2005)J/A+A/408/873 : Gas and stellar kinematics in spirals (Corsini+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/688/237https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/688/237http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/688/237https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/688/237https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/688/237http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/688/237GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVInfraredRadiodefaultJ/ApJ/688/237/table1Data sets used for vertical structure analysis of IC 2233TelTelescopemeta.id;instr.telcharf_Desc[ab] corrections applied (1)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDescWavelength descriptor of the observationinstr.bandpasscharBandWavelength interval (with unit)instr.bandpassFWHMFWHM PSFarcsecphys.angSizefloatRefReference (2)meta.ref;pos.frameintComDominant components tracedmeta.notecharJ/ApJ/688/237/table2IC 2233 corrugation curves (systematic displacements of the mean plane of the galaxy)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBandWavelength of the observation (See table 1)em.wl;obscharxMajor axis distance (1)arcsecpos.angDistancefloatzVertical displacementarcsecpos.angDistancefloate_zThe 1{sigma} uncertainty in zarcsecstat.error;src.redshiftfloat