LMC Young Stellar Structures

We 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.

Cone search capability for table J/MNRAS/512/1196/table1 (Parameters for the detected young stellar structures)

Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/512/1196
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/512/1196
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/512/1196
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/512/1196
Creator Miller 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.
Publisher CDS
Publication Year 2022
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; Natural Sciences; Physics; Stellar Astronomy