After their birth a significant fraction of all stars pass through the tidal threshold (práh) of their
cluster of origin into the classical tidal tails. The asymmetry between the number of stars in …

Their ubiquity and extreme densities make star clusters probes of prime importance of
galaxy evolution. Old globular clusters keep imprints of the physical conditions of their …

The origins of most stellar streams in the Milky Way are unknown. With improved proper
motions provided by Gaia EDR3, we show that the orbits of 23 Galactic stellar streams are …

Using the example of the tidal stream of the Milky Way globular cluster Palomar 5 (Pal 5), we
demonstrate how observational data on tidal streams can be efficiently reduced in …

Dynamically cold stellar streams are ideal probes of the gravitational field of the Milky Way.
This paper re-examines the question of how such streams might be used to test for the …

Abstract Only in the Milky Way is it possible to conduct an experiment that uses stellar
streams to detect low-mass dark matter subhaloes. In smooth and static host potentials, tidal …

Based on recent findings of a formation mechanism of substructure in tidal tails by Küpper et
al., we investigate a more comprehensive set of N-body models of star clusters on orbits …

We investigate the epicyclic motion of stars escaping from star clusters. Using streaklines,
we visualize the path of escaping stars and show how epicyclic motion leads to over-and …

Stars that escape globular clusters form tidal tails that are predominantly shaped by the
global distribution of mass in the Galaxy, but also preserve a historical record of small-scale …

Aims. On the basis of the PPMXL catalogue we perform an all-sky census of the Hyades
down to masses of about 0.2 m⊙ in a region up to 30 pc from the cluster centre. Methods …