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Red giant stellar collisions in the Galactic Centre
James E. Dale, Melvyn B. Davies, Ross P. Church +1
We show that collisions with stellar--mass black holes can partially explain the absence of bright giant stars in the Galactic Centre, first noted by Genzel et al, 1996. We show th…
Dynamics of galactic nuclei: Mass segregation and collisions
Marc Freitag, James E. Dale, Ross P. Church +1
Massive black holes (MBHs) with a mass below ~ 1e7 Msun are likely to reside at the centre of dense stellar nuclei shaped by 2-body relaxation, close interactions with the MBH and…
The nature of hypervelocity stars as inferred from their galactic trajectories
Karl M. Svensson, Ross P. Church, Melvyn B. Davies
We have computed the galactic trajectories of twelve hypervelocity stars (HVSs) under the assumption that they originated in the Galactic Centre. We show that eight of these twelve…
Is our Sun a Singleton?
D. Malmberg, M. B. Davies, J. E. Chambers +4
Most stars are formed in a cluster or association, where the number density of stars can be high. This means that a large fraction of initially-single stars will undergo close enco…
Close encounters in young stellar clusters: implications for planetary systems in the solar neighbourhood
Daniel Malmberg, Francesca De Angeli, Melvyn B. Davies +3
The stars that populate the solar neighbourhood were formed in stellar clusters. Through N-body simulations of these clusters, we measure the rate of close encounters between stars…