J/A+A/357/437ivo://CDS.VizieR/J/A+A/357/437doi:10.26093/cds/vizier.33570437CDSBattinelli P.Capuzzo-Dolcetta R.Hodge P.W.Vicari A.Wyder T.K.2000-06-03T10:33:28Z2000-06-03T10:33:22ZCDS support team

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

cds-question@unistra.frgalaxiesphotometrystellar-populationsyoung-stellar-objectsWe present multiband photometric observations of three spiral galaxies selected in a sample suited for the study of young stellar groupings and their relationship with the parent galaxy and the galactic environment. Star forming regions have been identified using an objective technique based on a multivariate statistical analysis. Maps of young star groupings are given for each galaxy. The luminosity functions of the young star group populations show a remarkable similarity with a slope in the range -1.52 to -1.33. The size distributions peak around the classical 100pc value of the Local Group associations for two out of the three galaxies. NGC 1058 shows smaller associations (peak at ~50pc). The total number of young groups per unit B absolute luminosity of the galaxy is significantly greater in UGC 12732. The activity of star formation is in all three galaxies clearly stronger in the central regions.2000A&A...357..437Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/357/437CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/116/1626 : Spiral & lenticular galaxy brightness profiles (Baggett+, 1998J/A+A/309/749 : Fundamental plane of early type galaxies (Prugniel+ 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/357/437https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/357/437http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/357/437https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/357/437https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/357/437http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/357/437GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/357/437/table1Young star groupings in NGC 7217SeqIdentification numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intXOffset from the galactic centre (1)arcsecintYOffset from the galactic centre (1)arcsecintDistDistance to the centrekpcfloatBmag? Integrated B magnitude (2)magfloatnullableSuBr? B-surface brightness (2)mag.arcsec**-2floatnullableDSizepcintJ/A+A/357/437/table2Young star groupings in NGC 1058recnoRecord number assigned by the VizieR team. Should Not be used for identification.intSeqIdentification numberintXOffset from the galactic centre (1)arcsecintYOffset from the galactic centre (1)arcsecintDistDistance to the centrekpcfloatBmag? Integrated B magnitude (2)magfloatnullableSuBr? B-surface brightness (2)mag.arcsec**-2floatnullableDSizepcintJ/A+A/357/437/table3Young star groupings in UGC 12732SeqIdentification numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intXOffset from the galactic centre (1)arcsecintYOffset from the galactic centre (1)arcsecintDistDistance to the centrekpcfloatBmag? Integrated B magnitude (2)magfloatnullableSuBr? B-surface brightness (2)mag.arcsec**-2floatnullableDSizepcint