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A peculiar object in M51: fuzzy star cluster or a background galaxy?
R. A. Scheepmaker, H. J. G. L. M. Lamers, S. S. Larsen +1
Aims: We study a peculiar object with a projected position close to the nucleus of M51. It is unusually large for a star cluster in M51 and we therefore investigate the three most…
The Age Distributions of Clusters and Field Stars in the Small Magellanic Cloud -- Implications for Star Formation Histories
J. M. Diederik Kruijssen, Henny J. G. L. M. Lamers
Differences between the inferred star formation histories (SFHs) of star clusters and field stars seem to suggest distinct star formation processes for the two. The Small Magellani…
Star cluster life-times: dependence on mass, radius and environment
Mark Gieles, Henny Lamers, Holger Baumgardt
The dissolution time (t_dis) of clusters in a tidal field does not scale with the ``classical'' expression for the relaxation time. First, the scaling with N, and hence cluster mas…
N-body simulations of star clusters
Peter Anders, Henny J. G. L. M. Lamers, Holger Baumgardt
Two aspects of our recent N-body studies of star clusters are presented: (1) What impact does mass segregation and selective mass loss have on integrated photometry? (2) How well c…
ACS imaging of star clusters in M51. I. Identification and radius distribution
R. A. Scheepmaker, M. R. Haas, M. Gieles +3
We use HST/ACS observations of the spiral galaxy M51 in F435W, F555W and F814W to select a large sample of star clusters with accurate effective radius measurements in an area cove…
Mass Loss and Evolution of Stars and Star Clusters: a Personal Historical Perspective
Henny J. G. L. M. Lamers
The development and progress of the studies of winds and mass loss from hot stars, from about 1965 up to now, is discussed in a personal historical perspective. The present state o…