J/A+A/675/A37ivo://CDS.VizieR/J/A+A/675/A37doi:10.26093/cds/vizier.36750037CDSEibensteiner C.Bigiel F.Leroy A.K.Koch E.W.Rosolowsky E.,Schinnerer E.Sardone A.Meidt S.de Blok W.J.G.Thilker D.,Pisano D.J.Ott J.Barnes A.Querejeta M.Emsellem E.Puschnig J.,Utomo D.Beslic I.den Brok J.Faridani S.Glover S.C.O.Grasha K.,Hassani H.Henshaw J.D.Jimenez-Donaire M.J.Kerp J.Dale D.A.,Kruijssen J.M.D.Laudage S.Sanchez-Blazquez P.Smith R.,Stuber S.Pessa I.Watkins E.J.Williams T.G.Winkel B.2024-11-06T20:05:09Z2023-06-29T07:36:26ZCDS support team

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

cds-question@unistra.frgalaxiesradio-astronomyWe present new HI observations of the nearby massive spiral galaxy M83, taken with the JVLA at 21 arcsec angular resolution (~500pc) of an extended (~1.5deg^2^) ten-point mosaic combined with GBT single-dish data. We study the super-extended HI disk of M83 (~50kpc in radius), in particular disk kinematics, rotation, and the turbulent nature of the atomic interstellar medium. We define distinct regions in the outer disk (r_gal_> central optical disk), including a ring, a southern area, a southern arm and a northern arm. We examine HI gas surface density, velocity dispersion, and noncircular motions in the outskirts, which we compare to the inner optical disk. We find an increase of velocity dispersion ({sigma}_v_) toward the pronounced HI ring, indicative of more turbulent HI gas. Additionally, we report over a large galactocentric radius range (until r_gal_~50kpc) where {sigma}_v_ is slightly larger than thermal component (i.e., >8km/s). We find that a higher star-formation rate (as traced by far UV emission) is not necessarily always associated with a higher HI velocity dispersion, suggesting that radial transport could be a dominant driver for the enhanced velocity dispersion. Furthermore, we find a possible branch that connects the extended HI disk to the dwarf irregular galaxy UGCA 365 and that deviates from the general direction of the northern arm. Lastly, we compare mass flow rate profiles (based on 2D and 3D tilted ring models) and find evidence for outflowing gas at r_gal_~2kpc, inflowing gas at r_gal_~5.5kpc, and outflowing gas at r_gal_~14kpc. We caution that mass flow rates are highly sensitive to the assumed kinematic disk parameters, in particular to inclination.2023A&A...675A..37Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/675/A37CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/675/A37https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/675/A37http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/675/A37https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/675/A37https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/675/A37http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/675/A37GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/675/A37/list (Information on fits datacube)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/675/A37/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/675/A37/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/675/A37/list?GETtext/xml+votable180.050000true204.34315-29.835860.0055555555555555566/43881https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/675/A37?format=asciiRadiodefaultJ/A+A/675/A37/listInformation on fits datacubeTitleTitle of the FITS filemeta.title;meta.fitscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintNzNumber of pixels along Z-axismeta.numberintObs.dateObservation datestime.epoch;obsnullablebVRADLower value of VRAD intervalm/sphys.veloc;pos.heliocentricintBVRADUpper value of VRAD intervalm/sphys.veloc;pos.heliocentricintdVRADVRAD resolutionm/sspect.resolutionfloatsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitschar