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Constraints on helium enhancement in the globular cluster m4 (NGC 6121): the horizontal branch test
(American Astronomical Society, 2020)
Homogeneous metallicities and radial velocities for Galactic globular clusters II. New CaT metallicities for 28 distant and reddened globular clusters
(2018)
Although the globular clusters in the Milky Way have been studied for a long time, a significant fraction of them lack homogeneous metallicity and radial velocity measurements. In an earlier paper we presented the first ...
Variable stars in the VVV globular clusters. I. 2MASS-GC 02 and Terzan 10
(Institute of Physics Publishing, 2015-03)
The VISTA Variables in the Vía Láctea (VVV) ESO Public Survey is opening a new window to study inner Galactic globular clusters (GCs) using their variable stars. These GCs have been neglected in the past due to the ...
Helium abundance difference within globular clusters: NGC 2808
(Societa Astronomica Italiana, 2015-01)
Multiple populations have been recently detected in most Galactic globular clusters,
even with no significant spread in metallicity. Unusual features of the observed colourmagnitude diagrams can be explained by differences ...
The southern leading and trailing wraps of the Sagittarius tidal stream around the globular cluster Whiting 1
(Oxford University Press, 2017)
We present a study of the kinematics of 101 stars observed with VIsible MultiObject Spectrograph around Whiting 1, a globular cluster embedded in the Sagittarius tidal stream. The obtained velocity distribution shows the ...
Intra-cluster Globular Clusters in a Simulated Galaxy Cluster
(IOP Publishing, 2018-01)
Using a cosmological dark matter simulation of a galaxy-cluster halo, we follow the temporal evolution of its globular cluster population. To mimic the red and blue globular cluster populations, we select at high redshift ...