We report the final redshift release of the 6dF Galaxy Survey (6dFGS), a combined redshift
and peculiar velocity survey over the southern sky (| b|> 10°). Its 136 304 spectra have …

We present an analysis of the relation between the masses of cluster-and group-sized
haloes, extracted from Λ cold dark matter (ΛCDM) cosmological N-body and hydrodynamic …

Mass modelling of spherical systems through internal kinematics is hampered by the mass–
velocity anisotropy degeneracy inherent in the Jeans equation, as well as the lack of …

ABSTRACT We use Gemini Near-Infrared Integral Field Spectrograph (NIFS) adaptive optics
assisted data cubes to map the stellar population of the inner few hundred parsec of a …

Galaxy clusters grow by accreting galaxies as individual objects, or as members of a galaxy
group. These groups can strongly impact galaxy evolution, stripping the gas from galaxies …

Ongoing or recent star formation in galaxies is known to increase with increasing projected
distance from the centre of a cluster out to several times its virial radius (R v). Using a …

Galaxy groups can be characterized by the radius of decoupling from cosmic expansion, the
radius of the caustic of second turnaround, and the velocity dispersion of galaxies within this …

When clusters of galaxies are viewed in projection, one cannot avoid picking up a fraction of
foreground/background interlopers, that lie within the virial cone, but outside the virial …

Numerous metrics exist to quantify the dynamical state of galaxy clusters, both
observationally and within simulations. Many of these correlate strongly with one another …

Aims. Star formation in massive galaxies is quenched at some point during hierarchical
mass assembly. To understand where and when the quenching processes takes place, we …