Stars lose a significant amount of angular momentum between birth and death, implying that
efficient processes transporting it from the core to the surface are active. Space …

We review and discuss horizontal branch (HB) stars in a broad astrophysical context,
including both variable and non-variable stars. A reassessment of the Oosterhoff dichotomy …

Stellar population synthesis (SPS) provides the link between the stellar and dust content of
galaxies and their observed spectral energy distributions. In the present work, we perform a …

This is the first of a series of papers presenting the results from our survey of 25 Galactic
globular clusters with the MUSE integral-field spectrograph. In combination with our …

Evolutionary population synthesis models for a wide range of metallicities, ages, star
formation histories, initial mass functions and horizontal branch morphologies, including …

Introducing the dragon simulation project, we present direct N-body simulations of four
massive globular clusters (GCs) with 106 stars and 5 per cent primordial binaries at a high …

Context. The fraction of binary stars is an important ingredient to interpret globular cluster
dynamical evolution and their stellar population. Aims. We investigate the properties of main …

The horizontal branch (HB) morphology of globular clusters (GCs) is most strongly
influenced by metallicity. The second parameter phenomenon, first described in the 1960s …

This paper presents the measurement of the neutron star (NS) radius using the thermal
spectra from quiescent low-mass X-ray binaries (qLMXBs) inside globular clusters (GCs) …

ABSTRACT The ACS Survey of Globular Clusters has used Hubble Space Telescope's
Wide-Field Channel to obtain uniform imaging of 65 of the nearest globular clusters to …