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The ATLAS3D project - XXVII : Cold gas and the colours and ages of early-type galaxies
(2014-11-11)
We present a study of the cold gas contents of the ATLAS3D early-type galaxies, in the context of their optical colours, near-ultraviolet colours and Hβ absorption line strengths. Early-type (elliptical and lenticular) ...
The ATLAS3D Project - XXVIII : Dynamically driven star formation suppression in early-type galaxies
(2014-11-11)
We present measurements of the star formation rate (SFR) in the early-type galaxies (ETGs) of the ATLAS3D sample, based on Wide-field Infrared Survey Explorer (WISE) 22 μm and Galaxy Evolution Explorer far-ultraviolet ...
The ATLAS3D project - XXVI : H I discs in real and simulated fast and slow rotators
(2014-11-11)
One quarter of all nearby early-type galaxies (ETGs) outside Virgo host a disc/ring of H I with size from a few to tens of kpc and mass up to ∼109 M⊙. Here we investigate whether this H I is related to the presence of a ...
The ATLAS project - XII : Recovery of the mass-to-light ratio of simulated early-type barred galaxies with axisymmetric dynamical models
(2012-08)
We investigate the accuracy in the recovery of the stellar dynamics of barred galaxies when using axisymmetric dynamical models. We do this by trying to recover the mass-to-light ratio (M/L) and the anisotropy of realistic ...
The ATLAS(3D) project-XIII. : mass and morphology of HI in early-type galaxies as a function of environment
(2012-05)
We present the ATLAS3D H i survey of a volume-limited, complete sample of 166 nearby early-type galaxies (ETGs) brighter than MK=-21.5. The survey is mostly based on data taken with the Westerbork Synthesis Radio Telescope, ...
Systematic variation of the stellar initial mass function in early-type galaxies
(2012-04-26)
Much of our knowledge of galaxies comes from analysing the radiation-emitted by their stars, which depends on the present number of each type of star in the galaxy. The present number depends on the stellar initial mass ...
The ATLAS(3D) project - VI. Simulations of binary galaxy mergers and the link with fast rotators, slow rotators and kinematically distinct cores
(2011-09)
We study the formation of early-type galaxies (ETGs) through mergers with a sample of 70 high-resolution (softening length <60pc and 12 × 10 particles) numerical simulations of binary mergers of disc galaxies (with 10 per ...
The ATLAS(3D) project - VII. A new look at the morphology of nearby galaxies: the kinematic morphology-density relation
(2011-09)
In Paper I of this series we introduced a volume-limited parent sample of 871 galaxies from which we extracted the ATLAS(3D) sample of 260 early-type galaxies (ETGs). In Papers II and III we classified the ETGs using their ...
The ATLAS(3D) project - II. Morphologies, kinemetric features and alignment between photometric and kinematic axes of early-type galaxies
(2011-07)
We use the ATLAS(3D) sample of 260 early-type galaxies to study the apparent kinematic misalignment angle, Psi, defined as the angle between the photometric and kinematic major axes. We find that 71 per cent of nearby ...
The ATLAS(3D) project - III. A census of the stellar angular momentum within the effective radius of early-type galaxies: unveiling the distribution of fast and slow rotators
(2011-06)
We provide a census of the apparent stellar angular momentum within one effective radius of a volume-limited sample of 260 early-type galaxies (ETGs) in the nearby Universe, using the integral-field spectroscopy obtained ...