• Publications
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Formation of ω Centauri from an ancient nucleated dwarf galaxy in the young Galactic disc
We first present a self-consistent dynamical model in which ω Cen is formed from an ancient nucleated dwarf galaxy merging with the first generation of the Galactic thin disc in a retrograde manner
The Tidal Origin of the Magellanic Stream and the Possibility of a Stellar Counterpart
We present an N-body model that reproduces the morphology and kinematics of the Magellanic Stream (MS), a vast neutral hydrogen (H I) structure that trails behind the Large and Small Magellanic
The 2dF Galaxy Redshift Survey: the local E+A galaxy population
We select a sample of low-redshift (z similar to 0.1) E+A galaxies from the 2dF Galaxy Redshift Survey (2dFGRS). The spectra of these objects are defined by strong hydrogen Balmer absorption lines
Formation and evolution of the Magellanic Clouds – I. Origin of structural, kinematic and chemical properties of the Large Magellanic Cloud
We investigate the dynamical and chemical evolution of the Large Magellanic Cloud (LMC) interacting with the Galaxy and the Small Magellanic Cloud (SMC) based on a series of self-consistent
Galaxy threshing and the origin of ultra-compact dwarf galaxies in the Fornax cluster
A recent all-object spectroscopic survey centred on the Fornax cluster of galaxies has discovered a population of subluminous and extremely compact members, called 'ultra-compact dwarf' (UCD)
Formation of blue compact dwarf galaxies from merging and interacting gas-rich dwarfs
We present the results of numerical simulations which show the formation of blue compact dwarf (BCD) galaxies from merging between very gas-rich dwarfs with extended H i gas discs. We show that
A class of compact dwarf galaxies from disruptive processes in galaxy clusters
TLDR
An all-object survey of the Fornax galaxy cluster revealed a new population of compact members, overlooked in previous conventional surveys, and it is demonstrated that these ‘ultra-compact’ dwarf galaxies are structurally and dynamically distinct from both globular star clusters and known types of dwarf galaxies, and thus represent a new class of dwarf galaxy.
Passive Spiral Formation from Halo Gas Starvation: Gradual Transformation into S0s
Recent spectroscopic and high-resolution Hubble Space Telescope (HST) imaging observations have revealed significant numbers of "passive" spiral galaxies in distant clusters, with all the
Secondary star formation within massive star clusters: origin of multiple stellar populations in globular clusters
  • K. Bekki
  • Physics, Geology
  • 27 November 2010
We numerically investigate whether and how gaseous ejecta from AGB stars can be converted into new stars within originally massive star clusters (MSCs) in order to understand the origin of multiple
Stellar Populations in Gas-rich Galaxy Mergers. II. Feedback Effects of Type Ia and Type II Supernovae
We numerically investigate the chemodynamical evolution of major disk-disk galaxy mergers in order to explore the origin of mass-dependent chemical, photometric, and spectroscopic properties observed
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