J/MNRAS/412/1539ivo://CDS.VizieR/J/MNRAS/412/1539doi:10.26093/cds/vizier.74121539CDSBastian N.Weisz D.R.Skillman E.D.McQuinn K.B.W.Dolphin A.E.,Gutermuth R.A.Cannon J.M.Ercolano B.Gieles M.Kennicutt R.C.,Walter F.2024-07-13T20:14:54Z2012-08-22T09:06:55ZCDS support team

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

cds-question@unistra.frgalaxiesphotometrystellar-agesWe present a study of the variation of spatial structure of stellar populations within dwarf galaxies as a function of the population age. We use deep Hubble Space Telescope/Advanced Camera for Surveys imaging of nearby dwarf galaxies in order to resolve individual stars and create composite colour-magnitude diagrams (CMDs) for each galaxy. Using the obtained CMDs, we select blue helium burning stars, which can be unambiguously age-dated by comparing the absolute magnitude of individual stars with stellar isochrones. Additionally, we select a very young (~<10Myr) population of OB stars for a subset of the galaxies based on the tip of the young main sequence. By selecting stars in different age ranges, we can then study how the spatial distribution of these stars evolves with time.2011MNRAS.412.1539Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/412/1539CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/412/1539https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/412/1539http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/412/1539https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/412/1539https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/412/1539http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/412/1539GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/MNRAS/412/1539/table1The position, age and estimated age error for all Blue-He-burning (BHeB) and young stars in our sampleGalGalaxy name (1)meta.id.parentcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar sequential number within the galaxymeta.recordintn_Star[MS ] MS for stars selected as young main sequence starsmeta.notecharXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatAgeAgeMyrtime.agefloate_Age? rms uncertainty on AgeMyrstat.error;time.agefloatnullable