J/MNRAS/387/1099ivo://CDS.VizieR/J/MNRAS/387/1099doi:10.26093/cds/vizier.73871099CDSPizzella A.Corsini E.M.Sarzi M.Magorrian J.Mendez-Abreu J.,Coccato L.Morelli L.Bertola F.2024-07-06T20:16:18Z2010-03-03T21:43:08ZCDS support team

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

cds-question@unistra.frgalaxy-rotationradial-velocityPhotometry and long-slit spectroscopy are presented for a sample of six galaxies with a low surface-brightness stellar disc and a bulge. The characterizing parameters of the bulge and disc components were derived by means of a two-dimensional photometric decomposition of the images of the sample galaxies. Their surface-brightness distribution was assumed to be the sum of the contribution of a Sersic bulge and an exponential disc, with each component being described by elliptical and concentric isophotes of constant ellipticity and position angle. The stellar and ionized-gas kinematics were measured along the major and minor axes in half of the sample galaxies, whereas the other half was observed only along two diagonal axes. Spectra along two diagonal axes were obtained also for one of the objects with major and minor axis spectra. The kinematic measurements extend in the disc region out to a surface-brightness level mu_R_~24mag/arcsec^2^, reaching in all cases the flat part of the rotation curve. The stellar kinematics turns out to be more regular and symmetric than the ionized-gas kinematics, which often shows the presence of non-circular, off-plane and non-ordered motions. This raises the question about the reliability of the use of the ionized gas as the tracer of the circular velocity in the modelling of the mass distribution, in particular in the central regions of low surface-brightness galaxies.2008MNRAS.387.1099Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/387/1099CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/115 : Surface Photometry of ESO-Uppsala Galaxies (Lauberts+ 1989)J/A+A/342/671 : Early-type spiral galaxies kinematics (Corsini+ 1999)J/A+AS/120/257 : Ionized gas velocity in 6 galaxies (Zeilinger+ 1996)J/AJ/119/2540 : Asiago-ESO/RASS QSO survey. I. (Grazian+, 2000)J/A+A/360/439 : Stellar and ionized gas kinematics in NGC 4672 (Sarzi+, 2000)J/A+A/374/394 : Gas and stars kinematics in disc galaxies (Vega Beltran+ 2001)J/A+A/382/488 : Stellar and ionized gas kinematics in NGC 2855 (Corsini+ 2002)J/A+A/408/873 : Gas and stellar kinematics in spirals (Corsini+, 2003)J/A+A/416/507 : Minor-axis velocity gradients in disk galaxies (Coccato+ 2004)J/A+A/424/447 : Kinematics in 17 nearby spiral galaxies (Pizzella+, 2004)J/A+A/440/107 : Gas velocity curve along five spiral galaxies (Coccato+, 2005)J/A+A/482/53 : Radial velocities of four LSB galaxies (Pizzella+, 2008)J/A+A/497/41 : Average Early-type galaxies NIR spectrum (Cesetti+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/387/1099https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/387/1099http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/387/1099https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/387/1099https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/387/1099http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/387/1099GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/387/1099/galaxies (Studied galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/387/1099/galaxies?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/387/1099/galaxies?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/387/1099/galaxies?GETtext/xml+votable180.050000true307.773333-52.6133330.0055555555555555566/20687 39448 42923 43515 44416 45905 46003 46010 47069 48264https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/387/1099?format=asciiOpticaldefaultJ/MNRAS/387/1099/galaxiesStudied galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintESO-LVESO-LV designationmeta.id;meta.mainintprimaryRAJ2000Simbad Hour of Right Ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Simbad Degree of Declination (J2000.0)pos.eq.dec;meta.mainBmagSimbad B band magnitudemagphot.mag;em.opt.BfloatVmag? Simbad V band magnitudemagphot.mag;em.opt.VfloatnullableMTypeSimbad morphological typesrc.morph.typecharSNameSimbad namemeta.idcharSample[sh] s for sample galaxies (tables 7 and 8), h for high SB galaxies (tables a6 and a7)meta.codecharprofSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.refcharJ/MNRAS/387/1099/stelkinStellar kinematics of the sample and HSB galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_ESO-LVSimbad column added by the CDSmeta.codecharESO-LVESO-LV galaxy numbermeta.id;meta.mainintPAPosition angle on the skydegpos.posAng;obs.fieldintrDistance from the galaxy centerarcsecpos.angDistancefloatVelVelocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_Velrms uncertainty on Velkm/sstat.errorfloatsigmaVelocity dispersionkm/sphys.veloc.dispersionfloate_sigmarms uncertainty on sigmakm/sstat.errorfloath3coefficient of 3rd-order Hermite polynomialstat.fit.paramfloate_h3rms uncertainty on h3stat.errorfloath4coefficient if 4th-order Hermite polynomialstat.fit.paramfloate_h4rms uncertainty on h4stat.errorfloatJ/MNRAS/387/1099/gaskinIonized-gas kinematics of the sample and HSB galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_ESO-LVSimbad column added by the CDSmeta.codecharESO-LVESO-LV galaxy numbermeta.id;meta.mainintPAPosition angle on the skydegpos.posAng;obs.fieldintrDistance from the galaxy centerarcsecpos.angDistancefloatVelVelocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_Velrms uncertainty on Velkm/sstat.errorfloatsigmaVelocity dispersionkm/sphys.veloc.dispersionfloate_sigmaError on sigma (lower limit)km/sstat.errorfloatE_sigmaError on sigma (upper limit)km/sstat.error;stat.maxfloat