We have derived accurate distances to Galactic globular clusters by combining data from the
Gaia Early Data Release 3 (EDR3) with distances based on Hubble Space Telescope (HST) …

We have derived the mean proper motions and space velocities of 154 Galactic globular
clusters and the velocity dispersion profiles of 141 globular clusters based on a combination …

Old-aged stellar distance indicators are present in all Galactic structures (halo, bulge, disk)
and in galaxies of all Hubble types and, thus, are immensely powerful tools for …

Ages have been derived for 55 globular clusters (GCs) for which Hubble Space Telescope
Advanced Camera for Surveys photometry is publicly available. For most of them, the …

Globular clusters are both primary fossils of galactic evolution and formation and are ideal
laboratories for constraining the evolution of low-mass and metal-poor stars. RR Lyrae and …

After a pedagogical introduction to the main concepts of synthetic photometry, colours and
bolometric corrections in the Johnson–Cousins, 2MASS, and HST-ACS/WFC3 photometric …

We present an estimate of the absolute age of 68 galactic globular clusters obtained by
exploiting the distribution of stars in the full color-magnitude diagram. In particular, we jointly …

Context. We are carrying out a search for planets around a sample of solar twin stars using
the HARPS spectrograph. The goal of this project is to exploit the advantage offered by solar …

The presence of differential reddening in the direction of Galactic globular clusters (GCs)
has proven to be a serious limitation in the traditional colour–magnitude diagram (CMD) …

Context. Models of stellar structure and evolution can be constrained by measuring accurate
parameters of detached eclipsing binaries in open clusters. Multiple binary stars provide the …