J/A+A/566/A71ivo://CDS.VizieR/J/A+A/566/A71doi:10.26093/cds/vizier.35660071CDSLelli F.Verheijen M.Fraternali F.2017-11-10T11:16:42Z2014-12-08T09:47:23ZCDS support team

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

cds-question@unistra.frgalaxiesh-i-line-emissionWe investigate the dynamics of starbursting dwarf galaxies, using both new and archival HI observations. We consider 18 nearby galaxies that have been resolved into single stars by HST observations, providing their star-formation history and total stellar mass. We find that 9 objects have a regularly rotating HI disk, 7 have a kinematically disturbed HI disk, and 2 show unsettled HI distributions. Two galaxies (NGC 5253 and UGC 6456) show a velocity gradient along the minor axis of the HI disk, which we interpret as strong radial motions. For galaxies with a regularly rotating disk we derive rotation curves, while for galaxies with a kinematically disturbed disk we estimate the rotation velocities in their outer parts. We derive baryonic fractions within about 3 optical scale lengths and find that, on average, baryons constitute at least 30% of the total mass. Despite the star formation having injected 10^56^ergs in the ISM in the past 500 Myr, these starbursting dwarfs have both baryonic and gas fractions similar to those of typical dwarf irregulars, suggesting that they did not eject a large amount of gas out of their potential wells.2014A&A...566A..71Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/566/A71CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/366/428 : HI observations of nearby dwarf galaxies (Karachentsev+, 2001)J/A+A/433/751 : Nearby Southern dwarf galaxies BR photometry (Makarova+, 2006)J/AJ/138/1203 : Star formation regions in nearby dwarf galaxies (Melena+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/566/A71https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/566/A71http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/566/A71https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/566/A71https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/566/A71http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/566/A71GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/566/A71/galaxies (Properties of the HI data cubes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/566/A71/galaxies?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/566/A71/galaxies?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/566/A71/galaxies?GETtext/xml+votable180.050000true23.77526-41.43490.0055555555555555566/3389 5607 7281 7878 7968 8028 8908 10689 10810 10911 10970 11006 16016 28631 28636 33986 35243 43874https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/566/A71?format=asciiRadiodefaultJ/A+A/566/A71/galaxiesProperties of the HI data cubesRefSource (1)meta.ref;pos.framecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharTelTelescopemeta.id;instr.telcharBeamO1Original beam (in arcsec)arcsecphys.angSize;instr.beamfloatBeamO2Original beam (in arcsec)arcsecphys.angSize;instr.beamfloatBeamO1pOriginal beam (in pc)pcphys.angSize;instr.beamintBeamO2pOriginal beam (in pc)pcphys.angSize;instr.beamintDVoOriginal velocity interval ({Delta}V)km/sspect.resolutionfloatBeamF1Final beam (in arcsec)arcsecphys.angSize;instr.beamfloatBeamF2Final beam (in arcsec)arcsecphys.angSize;instr.beamfloatBeamF1pFinal beam (in pc)pcphys.angSize;instr.beamintBeamF2pFinal beam (in pc)pcphys.angSize;instr.beamintDVfFinal velocity interval ({Delta}V)km/sspect.resolutionfloatRHI? HI radius per beamphys.angSize;srcfloatnullablermsrms noise (in mJy/beam)mJystat.stdev;instr.det.noisefloatRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainScale[0.5/9] Scale of the imagearcsec/pixinstr.scalefloatNx[171/1024] Number of pixels along X-axismeta.numberintNy[171/1024] Number of pixels along Y-axismeta.numberintNz[24/237] Number of slicesmeta.numberintbVelVelocity interval (lower limit)km/sphys.velocfloatBVelVelocity interval (upper limit)km/sphys.velocfloatdVel[1.2/9] Velocity resolutionkm/sspect.resolutionfloatsize[3805/434340] Size of FITS fileKibytephys.size;meta.fitsintfitsDownload the FITS data cubemeta.ref.urlcharFileNameName of FITS file in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the filemeta.title;meta.filecharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.refchar