Publication

A model for the infrared-radio correlation of main sequence galaxies at gigahertz frequencies and its variation with redshift and stellar mass

Publications associées (291)

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The cosmic decline in the H2/HI ratio in galaxies

Danail Obreschkow

We use a pressure-based model for splitting cold hydrogen into its atomic (HI) and molecular (H2) components to tackle the co-evolution of HI, H2, and star formation rates (SFR) in 3x10^7 simulated galaxies in the Millennium simulation. The main prediction ...

2009

Frequency and properties of bars in cluster and field galaxies at intermediate redshifts

Pascale Jablonka

We present a study of large-scale bars in field and cluster environments out to redshifts of similar to 0.8 using a final sample of 945 moderately inclined disk galaxies drawn from the EDisCS project. We characterize bars and their host galaxies and look f ...

2009

The dynamical and chemical evolution of dwarf spheroidal galaxies

Pascale Jablonka, Yves Revaz

We present a large sample of fully self-consistent hydrodynamical Nbody/Tree-SPH simulations of isolated dwarf spheroidal galaxies (dSphs). It has enabled us to identify the key physical parameters and mechanisms at the origin of the observed variety in th ...

2009

Barred Galaxies In The Abell 901/2 Supercluster With Stages

We present a study of bar and host disk evolution in a dense cluster environment, based on a sample of similar to 800 bright (M-V

2009

EDGE: Explorer of diffuse emission and gamma-ray burst explosions

Matthias Finger, Oleg Ruchayskiy, Simone Campana

How structures of various scales formed and evolved from the early Universe up to present time is a fundamental question of astrophysical cosmology. EDGE (Piro et al., 2007) will trace the cosmic history of the baryons from the early generations of massive ...

2009

Bars in Field and Cluster Galaxies at Intermediate Redshifts

Pascale Jablonka

We present the first study of large-scale bars in clusters at intermediate redshifts (z = 0.4 - 0.8). We compare the properties of the bars and their host galaxies in the clusters with those of a field sample in the same redshift range. We use a sample of ...

Astronomical Soc Pacific, 390 Ashton Ave, San Francisco, Ca 94112 Usa2009

HISTORY OF GALAXY INTERACTIONS AND THEIR IMPACT ON STAR FORMATION OVER THE LAST 7 Gyr FROM GEMS

We perform a comprehensive estimate of the frequency of galaxy mergers and their impact on star formation over z similar to 0.24-0.80 (lookback time T-b similar to 3-7 Gyr) using similar to 3600 (M >= 1 x 10(9) M-circle dot) galaxies with GEMS Hubble Space ...

2009

Interacting Galaxies In The A901/902 Supercluster With Stages

We present a study of galaxy mergers and the influence of environment in the Abell 901/902 supercluster at z similar to 0.165, based on 893 bright (R-Vega = 10(9) M-circle dot) galaxies. We use HST ACS F606W data from the Spa ...

2009

The Low-Mass Initial Mass Function In The 30 Doradus Starburst Cluster

Marilyne Andersen, Georges Meylan

We present deep Hubble Space Telescope NICMOS 2 F160W band observations of the central 56 '' x 57 '' (14 pc x 14.25 pc) region around R136 in the starburst cluster 30Dor (NGC 2070) located in the Large Magellanic Cloud. Our aim is to derive the stellar ini ...

2009

Relating basic properties of bright early-type dwarf galaxies to their location in Abell 901/902

We present a study of the population of bright early-type dwarf galaxies in the multiple-cluster system Abell 901/902. We use data from the STAGES survey and COMBO-17 to investigate the relation between the color and structural properties of the dwarfs and ...

2009