Kenji Bekki

TL;DR: In this article, the authors show that even if a spiral orbits a cluster with a pericenter distance 3 times larger than the cluster core radius, 80% of the halo gas is stripped within a few Gyr and cannot be accreted by the spiral.

TL;DR: In this paper, a self-consistent dynamical model is presented in which ω Cen is formed from an ancient nucleated dwarf galaxy merging with the first generation of the Galactic thin disc in a retrograde manner with respect to the Galactic rotation.

TL;DR: In this article, it was shown that even if a spiral orbits a cluster with a pericenter distance 3 times larger than the cluster core radius, 80 % of the halo gas is stripped within a few Gyr and, accordingly, cannot be accreted by the spiral.

TL;DR: The first science results, aimed at assessing the scientific quality of the VMC data, include an overview of the distribution of stars in colour-magnitude and colour-colour diagrams, the detection of planetary nebulae and stellar clusters, and the Ks band light-curves of variable stars.

TL;DR: An all-object survey of the Fornax galaxy cluster revealed a new population of compact members, overlooked in previous conventional surveys, and it is demonstrated that these ‘ultra-compact’ dwarf galaxies are structurally and dynamically distinct from both globular star clusters and known types of dwarf galaxies, and thus represent a new class of dwarf galaxy.