• Publications
  • Influence
Young Massive Star Clusters
Young massive clusters (YMCs) are dense aggregates of young stars that form the fundamental building blocks of galaxies. Several examples exist in the Milky Way Galaxy and the Local Group, but theyExpand
  • 597
  • 145
  • PDF
The Runaway Growth of Intermediate-Mass Black Holes in Dense Star Clusters
We study the growth rate of stars via stellar collisions in dense star clusters, calibrating our analytic calculations with direct N-body simulations of up to 65,536 stars, performed on the GRAPEExpand
  • 382
  • 85
  • PDF
Formation of massive black holes through runaway collisions in dense young star clusters
A luminous X-ray source is associated with MGG 11—a cluster of young stars ∼200 pc from the centre of the starburst galaxy M 82 (refs 1, 2). The properties of this source are best explained byExpand
  • 452
  • 75
  • PDF
Population synthesis for double white dwarfs. I. Close detached systems.
We model the population of double white dwarfs in the Galaxy and find a better agreement with observations compared to earlier studies, due to two modifications. The first is the treatment of theExpand
  • 244
  • 47
  • PDF
An analytical description of the disruption of star clusters in tidal fields with an application to Galactic open clusters
We present a simple analytical description of the disruption of star clusters in a tidal field. The cluster disruption time, defined as tdis = {dln M/dt} −1 , depends on the mass M of the cluster asExpand
  • 203
  • 45
  • PDF
Star cluster ecology-IV. Dissection of an open star cluster: photometry
The evolution of star clusters is studied using N-body simulations in which the evolution of single stars and binaries is taken self-consistently into account. Initial conditions are chosen toExpand
  • 294
  • 42
  • PDF
Dynamical Formation of Close Binary Systems in Globular Clusters
We know from observations that globular clusters are very efficient catalysts in forming unusual short-period binary systems or their offspring, such as low-mass X-ray binaries (LMXBs; neutron starsExpand
  • 223
  • 38
  • PDF
Population synthesis for double white dwarfs. II. Semi-detached systems: AM CVn stars
We study two models for AM CVn stars: white dwarfs accreting (i) from a helium white dwarf companion and (ii) from a helium-star donor. We show that in the first model possibly no accretion diskExpand
  • 188
  • 33
  • PDF
The primordial binary population. II.. Recovering the binary population for intermediate mass stars in Scorpius OB2
We characterize the binary population in the young and nearby OB association Scorpius OB2 (Sco OB2) using available observations of visual, spectroscopic and astrometric binaries with intermediate-mass primaries. Expand
  • 161
  • 31
  • PDF
Disruption time scales of star clusters in different galaxies
The observed average lifetime of the population of star clusters in the Solar Neighbourhood, the Small Magellanic Cloud and in selected regions of M 51 and M 33 is compared with simple theoreticalExpand
  • 112
  • 31
  • PDF