J/A+A/324/877ivo://CDS.VizieR/J/A+A/324/877doi:10.26093/cds/vizier.33240877CDSBroeils A.H.Rhee M.-H.2017-10-27T10:42:52Z2017-10-27T11:40:18ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsh-i-line-emissiongalaxy-classification-systemsWe present the analysis of neutral hydrogen properties of 108 galaxies, based on short 21-cm observations with the Westerbork Synthesis Radio Telescope (WSRT). The results of two HI surveys are analysed to investigate the existence of relations between optical and HI properties, like diameters, hydrogen masses and average surface densities. For all galaxies in our sample we find that the HI diameter, defined at a surface density level of 1M_{sun}_/pc^2^, is larger than the optical diameter, defined at the 25^th^mag/arcsec^2^ isophotal level. The Hi-to-optical-diameter ratio does not depend on morphological type or luminosity. The strongest, physically meaningful, correlation for the sample of 108 galaxies is the one between logM_HI_ and logD_HI_, with a slope of 2. This implies that the HI surface density averaged over the whole HI disc is constant from galaxy to galaxy, independent of luminosity or type. The radial HI surface density profiles are studied using the technique of principal component analysis. We find that about 81% of the variation in the density profiles of galaxies can be explained by two dimensions. The most dominant component can be related to "scale" and the second principal component accounts for the variance in the behaviour of the radial profile in the central parts of galaxies (i.e. "peak or depression") . The third component accounts for 7% of the variation and is most likely responsible for bumps and wiggles in the observed density profiles.1997A&A...324..877Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/324/877CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/324/877https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/324/877http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/324/877https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/324/877https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/324/877http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/324/877GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/324/877/table1 (Properties of the galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/324/877/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/324/877/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/324/877/table1?GETtext/xml+votable180.050000true156.027916770.88222220.0055555555555555566/559 611 664 697 700 816 2130 2333 2347 2362 2383 3073 3516 3558 3909 3922 4405 4839 5061 5067 5183 5202 5504 5545 5572 5579 5587 5589 5594 5596 5628-5629 5827 5978 6050 6066 6178 6619 7386 7498 7602 7627 7649 7704 7882 7957 7966 8042 8169 8492 8944 9437 9535 9600 9894 10511 10544 10627 10637 10769 10787 10799 10847 10930 10941 10979 10986 10990 11000 11006 11019 11092 11207 11217 11227 11253 11323 11389 11446 11460 11480 11726 11832 11933 12619 13106 13130 16098 16120 16322 18379 19843 20113 20188 20225 20270 20371 27603 27823 28267 28496 28529 28612 28659 32231https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/324/877?format=asciiRadioOpticaldefaultJ/A+A/324/877/table1Properties of the galaxiesSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharn_Name[a] Note on Name (1)meta.notecharMTypeMorphological typesrc.morph.typecharDHIHI diameter defined by a surface density of 1M_{sun}_/pc^2^kpcpos.distanceintD25Optical diameter defined at the 25th mag/arcsec^2^ isophote and corrected for Galactic and internal extinctions following Tully & Fouque (1985ApJS...58...67T)kpcpos.distanceintReffHI effective radius, enclosing 50% of the HI masskpcphys.size.radiusintMHITotal HI mass1e+10solMassphys.massfloatMtotTotal mass enclosed inside the HI diameter DHI (see text)1e+10solMassphys.massfloatMHI/LBHI-mass-to-blue-luminosity ratio (2)solMass/solLumphys.composition.massLightRatiofloatMHI/LH? HI-mass-to-near-infrared-luminosity ratio (3)solMass/solLumphys.composition.massLightRatiofloatnullableMHI/MtotHI-mass-to-total-mass ratiophys.mass;arith.ratiofloat<sigHI>Mean value of the HI surface density, averaged over the whole HI disc (see text)solMass.pc**-2phot.flux.density.sb;em.line.HI;stat.meanfloatVmaxMaximum rotation velocitykm/sphys.veloc.rotat;stat.maxint_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main