Mass Segregation in Young LMC Clusters

Details Mass Segregation in Young LMC Clusters Mass Segregation in Young LMC Clusters

2003-05-15

arxiv.org/abs/astro-ph/0305262v1

Astronomy and Astrophysics

Astrophysics

5 pages LaTeX; to appear in: "The Local Group as an Astrophysical Laboratory", STScI Symp., May 2003, Baltimore (USA), ed. Liv

Scientific paper

We present the detailed analysis of Hubble Space Telescope observations of the spatial distributions of different stellar species in two young compact star clusters in the Large Magellanic Cloud (LMC), NGC 1805 and NGC 1818. Based on a comparison of the characteristic relaxation times in their cores and at their half-mass radii with the observed degree of mass segregation, it is most likely that significant primordial mass segregation was present in both clusters, particularly in NGC 1805. Both clusters were likely formed with very similar initial mass functions (IMFs). In fact, we provide strong support for the universality of the IMF in LMC clusters for stellar masses m >= 0.8 M_sun.

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