397 citations · 2k across the 44 of their papers we have counts for
9 papers · 2 filters
Ionisation-induced star formation I: The collect and collapse model
J. E. Dale, I. A. Bonnell, A. P. Whitworth
We conduct Smoothed Particle Hydrodynamics simulations of the `collect and collapse' scenario (Elmegreen and Lada, 1977) for star formation triggered by an expanding HII region. We…
Spiral arm triggering of star formation
Ian A. Bonnell
We present numerical simulations of the passage of clumpy gas through a galactic spiral shock, the subsequent formation of giant molecular clouds (GMCs) and the triggering of star…
Planetesimal formation via fragmentation in self-gravitating protoplanetary discs
W. K. M. Rice, G. Lodato, J. E. Pringle +2
An unsolved issue in the standard core accretion model for gaseous planet formation is how kilometre-sized planetesimals form from, initially, micron-sized dust grains. Solid growt…
Star formation through gravitational collapse and competitive accretion
Ian A. Bonnell, Matthew R. Bate
Competitive accretion, a process to explain the origin of the IMF, occurs when stars in a common gravitational potential accrete from a distributed gaseous component. We show that…
Clumpy shocks and the clump mass function
Paul C. Clark, Ian A. Bonnell
In this paper, we examine whether clumpy, colliding, flows could be responsible for the clump mass functions that have been observed in several regions of embedded star formation,…
The Origin of the Initial Mass Function
Ian A. Bonnell, Richard B. Larson, Hans Zinnecker
We review recent advances in our understanding of the origin of the initial mass function (IMF). We emphasize the use of numerical simulations to investigate how each physical proc…