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The Atlas3D Project -- XI. Dense molecular gas properties of CO-luminous early-type galaxies
Alison Crocker, Melanie Krips, Martin Bureau +24
Surveying eighteen 12CO-bright galaxies from the ATLAS3D early-type galaxy sample with the Institut de Radio Astronomie Millimétrique (IRAM) 30m telescope, we detect 13CO(1-0) and…
The Atlas3D project -- XIII. Mass and morphology of HI in early-type galaxies as a function of environment
Paolo Serra, Tom Oosterloo, Raffaella Morganti +23
We present the Atlas3D HI survey of 166 nearby early-type galaxies (ETGs) down to M(HI)~10^7 M_sun. We detect HI in ~40% of all ETGs outside the Virgo cluster and in ~10% of all ET…
The ATLAS3D Project-- VIII: Modelling the Formation and Evolution of Fast and Slow Rotator Early-Type Galaxies within CDM
Sadegh Khochfar, Eric Emsellem, Paolo Serra +22
We propose a simple model for the origin of fast and slow rotator early-type galaxies (ETG) within the hierarchical CDM scenario, that is based on the assumption that the mass f…
The Atlas3D project - X. On the origin of the molecular and ionised gas in early-type galaxies
Timothy A. Davis, Katherine Alatalo, Marc Sarzi +22
We make use of interferometric CO and HI observations, and optical integral-field spectroscopy to probe the origin of the molecular and ionised interstellar medium (ISM) in local e…
The Atlas-3D project - IX. The merger origin of a fast and a slow rotating Early-Type Galaxy revealed with deep optical imaging: first results
Pierre-Alain Duc, Jean-Charles Cuillandre, Paolo Serra +24
The mass assembly of galaxies leaves imprints in their outskirts, such as shells and tidal tails. The frequency and properties of such fine structures depend on the main acting mec…
The Atlas3D Project - VI. Simulations of binary galaxy mergers and the link with Fast Rotators, Slow Rotators, and Kinematically Distinct Cores
Maxime Bois, Eric Emsellem, Frederic Bournaud +21
We study the formation of early-type galaxies through mergers with a sample of 70 high-resolution (softening length < 60 pc and 12*10^6 particles) numerical simulations of binary m…
The Atlas3D project - VII. A new look at the morphology of nearby galaxies: the kinematic morphology-density relation
Michele Cappellari, Eric Emsellem, Davor Krajnovic +20
We look at the morphology of fast and slow rotator early-type galaxies. Edge-on fast rotators are lenticular galaxies. They appear like spiral galaxies with the gas and dust remove…
Discovery of an AGN-Driven Molecular Outflow in the Local Early-Type Galaxy NGC 1266
Katherine Alatalo, Leo Blitz, Lisa M. Young +26
We report the discovery of a powerful molecular wind from the nucleus of the non-interacting nearby S0 field galaxy NGC 1266. The single-dish CO profile exhibits emission to +/- 40…
The ATLAS3D project - II. Morphologies, kinemetric features and alignment between photometric and kinematic axes of early-type galaxies
Davor Krajnovic, Eric Emsellem, Michele Cappellari +20
[Abridged] We use the ATLAS3D sample of 260 early-type galaxies (ETGs) to study the apparent kinematic misalignment angle, Psi, defined as the angle between the photometric and kin…
The Atlas3D project -- IV: the molecular gas content of early-type galaxies
Lisa M. Young, Martin Bureau, Timothy A. Davis +21
We have carried out a survey for 12CO J=1-0 and J=2-1 emission in the 260 early-type galaxies of the volume-limited Atlas3D sample, with the goal of connecting their star formation…
The Atlas3D project - V. The CO Tully-Fisher relation of early-type galaxies
Timothy A. Davis, Martin Bureau, Lisa M. Young +20
We demonstrate here using both single-dish and interferometric observations that CO molecules are an excellent kinematic tracer, even in high-mass galaxies, allowing us to investig…
The ATLAS3D 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
Eric Emsellem, Michele Cappellari, Davor Krajnović +21
We provide a census of the apparent stellar angular momentum within 1 Re of a volume-limited sample of 260 early-type galaxies (ETGs) in the nearby Universe, using integral-field s…
Molecular Gas and Star Formation in Local Early-Type Galaxies
M. Bureau, T. A. Davis, K. Alatalo +23
The molecular gas content of local early-type galaxies is constrained and discussed in relation to their evolution. First, as part of the Atlas3D survey, we present the first compl…
Investigating the merger origin of Early-Type Galaxies using ultra-deep optical images
P. -A. Duc, J. -C. Cuillandre, K. Alatalo +28
The mass assembly of galaxies leaves various imprints on their surroundings, such as shells, streams and tidal tails. The frequency and properties of these fine structures depend o…