Were the LMC Globular Clusters Formed in a Disk?

Details Were the LMC Globular Clusters Formed in a Disk? Were the LMC Globular Clusters Formed in a Disk?

2003-11-13

arxiv.org/abs/astro-ph/0311322v1

Astronomy and Astrophysics

Astrophysics

6 pages, 1 figure, Publication in the February 2004 issue of the Astronomical Journal

Scientific paper

10.1086/381303

The radial velocities of the 13 globular clusters in the Large Magellanic Cloud have a dispersion of 28 km s$^{-1}$ relative to the HI rotation curve of the LMC, compared to a dispersion of 30 km s$^{-1}$ with regard to the mean globular cluster velocity. This shows that, contrary to a suggestion by Schommer et al. (1992), one cannot yet rule out the possibility that the LMC globular clusters formed in a pressure supported halo, rather than in rotating disk. The globular clusters in the LMC may therefore, after all, exhibit a relationship between age and kinematics that is similar to that of the clusters in M33.

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