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Lack of nuclear clusters in dwarf spheroidal galaxies: implications for massive black holes formation and the cusp/core problem
Manuel Arca-Sedda, Roberto Capuzzo-Dolcetta
One of the leading scenarios for the formation of nuclear star clusters in galaxies is related to the orbital decay of globular clusters (GCs) and their subsequent merging, though…
Globular clusters as tracers of the host galaxy mass distribution: the Fornax dSph test case
Manuel Arca-Sedda, Roberto Capuzzo-Dolcetta
The Fornax dwarf spheroidal galaxy is the most massive satellites of the Milky Way, claimed to be embedded in a huge dark matter halo, and the only among the Milky Way satellites h…
"Dark" systems in globular clusters: GWs emission and limits on the formation of IMBHs
Manuel Arca-Sedda
Many observed globular clusters (GCs) seem to show a central overabundance of mass whose nature has not yet fully understood. Indeed, it is not clear whether it is due to a central…
Massive black holes interactions during the assembly of heavy sub-structures in the centre of galaxy clusters
M. Donnari, M. Arca-Sedda, M. Merafina
We performed a series of direct N-body simulations with the aim to follow the dynamical evolution of a galaxy cluster (GC) () in different environ…
Can dark energy explain the observed outflow in galaxy clusters?
M. Donnari, M. Arca-Sedda, M. Merafina
Recent observations of the Virgo cluster and the Local Group suggested that some galaxies are flowing out from their parent cluster. This may be the signature that dark energy (DE)…
Star clusters as tracers of galactic nuclei properties
Manuel Arca-Sedda, Roberto Capuzzo-Dolcetta
We present a series of -body simulations representing the evolution of a galactic nucleus and its stellar content in a nearly one-to-one representation. The aim of this suite of…
The local effect of Dark Energy in galaxy clusters
Martina Donnari, Marco Merafina, Manuel Arca-Sedda
Recently, observational data and high precision mapping of the local velocity field of Local Group and Virgo cluster have revealed a linear velocity-distance relation of the outerm…
Will a nuclear stellar disk form in the galaxy Henize 2-10?
Manuel Arca-Sedda, Roberto Capuzzo-Dolcetta
We present results of a set of -body simulations to model the future evolution of the 11 young massive clusters hosted in the central region of the dwarf starburst galaxy Henize…