2.7k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre de Recherche Astrophysique de LyonFR515 papers
- Lyon 1 UniversitéFR430 papers
- Centre National de la Recherche ScientifiqueFR408 papers
- École Normale Supérieure de LyonFR224 papers
- European Southern ObservatoryCL146 papers
- University of OxfordGB141 papers
- Observatoire de ParisFR124 papers
- Leiden UniversityNL121 papers
- University of GroningenNL95 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR91 papers
- Max Planck Institute for AstrophysicsDE90 papers
- Leiden Observatory88 papers
150 papers · 1 filter
Dark Energy vs. Dark Matter: Towards a Unifying Scalar Field?
A. Arbey
The standard model of cosmology suggests the existence of two components, "dark matter" and "dark energy", which determine the fate of the Universe. Their nature is still under inv…
Cosmological constraints on unifying Dark Fluid models
A. Arbey
In the standard model of cosmology, dark matter and dark energy are presently the two main contributors to the total energy in the Universe. However, these two dark components are…
Binary Galaxies in the Local Supercluster and Its Neighborhood
I. D. Karachentsev, D. I. Makarov
We report a catalog of 509 pairs identified among 10403 nearby galaxies with line-of-sight velocities V_LG < 3500 km/s.We selected binary systems in accordance with two criteria (b…
Stellar Velocity Profiles and Line-Strengths out to Four Effective Radii in the Early-Type Galaxy NGC 3379
A. Weijmans, M. Cappellari, P. T. de Zeeuw +6
We describe a new technique to measure stellar kinematics and line-strengths at large radii in nearby galaxies. Using the integral-field spectrograph SAURON as a 'photon-collector'…
Dynamical Evolution of AGN Host Galaxies - Gas In/Out-Flow Rates in 7 NUGA Galaxies
Sebastian Haan, Eva Schinnerer, Eric Emsellem +4
To examine the role of the host galaxy structure in fueling nuclear activity, we estimated gas flow rates from several kpc down to the inner few 10 pc for seven nearby spiral galax…
Quenching of Star Formation
Vivienne Wild, Tamas Budavari, Jeremy Blaizot +5
In the last decade we have seen an enormous increase in the size and quality of spectroscopic galaxy surveys, both at low and high redshift. New statistical techniques to analyse l…
GalICS II: the [alpha/Fe]-mass relation in elliptical galaxies
A. Pipino, J. E. G. Devriendt, D. Thomas +2
We aim at reproducing the mass- and sigma-[alpha/Fe] relations in the stellar populations of early-type galaxies by means of a cosmologically motivated assembly history for the sph…
Phase Closure Image Reconstruction for Future VLTI Instrumentation
Mercedes E. Filho, Stephanie Renard, Paulo Garcia +21
Classically, optical and near-infrared interferometry have relied on closure phase techniques to produce images. Such techniques allow us to achieve modest dynamic ranges. In order…
Phase Referencing in Optical Interferometry
Mercedes E. Filho, Paulo Garcia, Gilles Duvert +20
One of the aims of next generation optical interferometric instrumentation is to be able to make use of information contained in the visibility phase to construct high dynamic rang…
Specific Angular Momentum of Disc Merger Remnants and the -Parameter
Roland Jesseit, Michele Cappellari, Thorsten Naab +2
We use two-dimensional kinematic maps of simulated binary disc mergers to investigate the -parameter, which is a luminosity weighted measure of projected angular momentum per…
Sigma-drop in galaxies and the sigma-metallicity degeneracy
Mina Koleva, Philippe Prugniel, Sven De Rijcke
In some galaxies, the central velocity dispersion, sigma, is depressed with respect to the surroundings. This sigma-drop phenomenon may have different physical origins, bearing inf…
Galaxy mergers at high resolution: From elliptical galaxies to tidal dwarfs and globular clusters
F. Bournaud, M. Bois, E. Emsellem +1
Numerical simulations of galaxy mergers are a powerful tool to study these fundamental events in the hierarchical built-up of galaxies. Recent progress have been made owing to impr…
Constraints on the star formation histories of galaxies from z~1 to z~0
Yan-Mei Chen, Vivienne Wild, Guinevere Kauffmann +5
We present a new method to estimate the average star formation rate per unit stellar mass (SSFR) of a stacked population of galaxies. We combine the spectra of 600-1000 galaxies wi…
Imaging reconstruction for infrared interferometry: first images of YSOs environment
S. Renard, F. Malbet, E. Thiebaut +1
The study of protoplanetary disks, where the planets are believed to form, will certainly allow the formation of our Solar System to be understood. To conduct observations of these…
The SAURON project - XII. Kinematic substructures in early-type galaxies: evidence for disks in fast rotators
Davor Krajnovic, R. Bacon, Michele Cappellari +10
[Abridged] We analysed two-dimensional maps of 48 early-type galaxies obtained with the SAURON and OASIS integral-field spectrographs using kinemetry, a generalisation of surface p…
High-resolution simulations of galaxy mergers: Resolving globular cluster formation
F. Bournaud, P. -A. Duc, E. Emsellem
Massive star clusters observed in galaxy mergers are often suggested to be progenitors of globular clusters. To study this hypothesis, we performed the highest resolution simulatio…
The Vimos VLT Deep Survey: Global properties of 20000 galaxies in the I_AB<=22.5 WIDE survey
B. Garilli, O. Le Fèvre, L. Guzzo +44
The VVDS-Wide survey has been designed with the general aim of tracing the large-scale distribution of galaxies at z~1 on comoving scales reaching ~100Mpc/h, while providing a good…
The Coarse Geometry of Merger Trees in ΛCDM
Jaime E. Forero-Romero
We introduce the contour process to describe the geometrical properties of merger trees. The contour process produces a one-dimensional object, the contour walk, which is a transla…
Spectroscopic ages and metallicities of stellar populations: validation of full spectrum fitting
M. Koleva, Ph. Prugniel, P. Ocvirk +2
Fitting whole spectra at intermediate spectral resolution (R = 1000 -- 3000), to derive physical properties of stellar populations, appears as an optimized alternative to methods b…
Towards a Solution for the Ca II Triplet Puzzle : Results from Dwarf Elliptical Galaxies
Dolf Michielsen, Mina Koleva, Philippe Prugniel +6
We present new estimates of ages and metallicities, based on FORS/VLT optical (4400-5500A) spectroscopy, of 16 dwarf elliptical galaxies (dE's) in the Fornax Cluster and in Souther…
Formation of central massive objects via tidal compression
Eric Emsellem, Glenn van de Ven
For a density that is not too sharply peaked towards the center, the local tidal field becomes compressive in all three directions. Available gas can then collapse and form a clust…
Spiral Galaxies in the SAURON Survey
Reynier F. Peletier, Katia Ganda, Jesus Falcon-Barroso +11
We discuss some recent integral field spectroscopy using the SAURON instrument of a sample consisting of 24 early-type spirals, part of the SAURON Survey, and 18 late-type spirals.…
Integral Field Spectrographs: a user's view
Eric Emsellem
We easily tend to think of Integral-Field Spectrographs (IFS) along two opposing trends: as either the beautiful combination between photometry and spectroscopy, or as our worst ni…
Fast and Slow Rotators: The build-up of the Red Sequence
Eric Emsellem, Michele Cappellari, Davor Krajnovic +11
Using the unique dataset obtained within the course of the SAURON project, a radically new view of the structure, dynamics and stellar populations of early-type galaxies has emerge…