J/MNRAS/512/1196ivo://CDS.VizieR/J/MNRAS/512/1196doi:10.26093/cds/vizier.75121196CDSMiller A.E.Cioni M.-R.L.de Grijs R.Sun N.-C.Bell C.P.M.,Choudhury S.Ivanov V.D.Marconi M.Oliveira J.M.Petr-Gotzens M.,Ripepi V.van Loon J.T.2024-08-22T20:15:20Z2022-05-02T07:53:46ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsstellar-associationsopen-star-clustersgalaxiesinfrared-sourcesearly-type-starsWe perform a statistical clustering analysis of upper main-sequence stars in the Large Magellanic Cloud (LMC) using data from the Visible and Infrared Survey Telescope for Astronomy survey of the Magellanic Clouds. We map over 2500 young stellar structures at 15 significance levels across ~120 square degrees centred on the LMC. The structures have sizes ranging from a few parsecs to over 1kpc. We find that the young structures follow power-law size and mass distributions. From the perimeter-area relation, we derive a perimeter-area dimension of 1.44+/-0.20. From the mass-size relation and the size distribution, we derive two-dimensional fractal dimensions of 1.50+/-0.10 and 1.61+/-0.20, respectively. We find that the surface density distribution is well-represented by a lognormal distribution. We apply the Larson relation to estimate the velocity dispersions and crossing times of these structures. Our results indicate that the fractal nature of the young stellar structures has been inherited from the gas clouds from which they form and that this architecture is generated by supersonic turbulence. Our results also suggest that star formation in the LMC is scale-free from 10pc to 700pc.2022MNRAS.512.1196Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/512/1196CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/512/1196https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/512/1196http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/512/1196https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/512/1196https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/512/1196http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/512/1196GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/512/1196/table1 (Parameters for the detected young stellar structures)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/512/1196/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/512/1196/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/512/1196/table1?GETtext/xml+votable180.050000true93.2137339199425-68.26812714406870.0055555555555555564/2068 5/8263 8269 8276 8278 8280-8281 6/33046-33047 33049 33051 33072-33073 33075 33108 33110 33116 33118 33136-33137 37537-37538 37544https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/512/1196?format=asciiInfrareddefaultJ/MNRAS/512/1196/table1Parameters for the detected young stellar structuresrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID numbermeta.id;meta.mainintSigniLevelSignificance levelstat.fit.goodnessintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainRadiusRadiuspcphys.angSize;srcdoubleNstarNumber of starsmeta.numberdoubleSurfaceStellar surface densitypc**-2src.densitydoublesigmaVelocity dispersion from the Larson relationkm/sphys.veloc.dispersiondoubletcrCrossing timeMyrtime.crossingdouble