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Related publications (31)

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Physical properties and evolutionary state of the Lyman alpha emitting starburst galaxy IRAS 08339+6517

Hakim Atek

Context. Though Ly alpha emission is one of the most used tracers of massive star formation at high redshift, it is strongly affected by neutral gas radiation transfer effects. A correct understanding of these effects is required to properly quantify the s ...

EDP Sciences2014

Low Masses And High Redshifts: The Evolution Of The Mass-Metallicity Relation

Hakim Atek

We present the first robust measurement of the high redshift mass-metallicity (MZ) relation at 10(8) less than or similar to M/M-circle dot less than or similar to 10(10), obtained by stacking spectra of 83 emission-line galaxies with secure redshifts betw ...

Iop Publishing Ltd2013

The dynamical and chemical evolution of dwarf spheroidal galaxies with GEAR

Pascale Jablonka, Yves Revaz

We present the fully parallel chemo-dynamical Tree/SPH code GEAR, which allows us to perform high resolution simulations with detailed chemical diagnostics. Starting from the public version of Gadget-2, we included the complex treatment of the baryon physi ...

2012

Cl 1103.7-1245 at z=0.96: the highest redshift galaxy cluster in the EDisCS survey

Pascale Jablonka

We present new spectroscopic observations in a field containing the highest redshift cluster of the ESO Distant Cluster Survey (EDisCS). We measure galaxy redshifts and determine the velocity dispersions of the galaxy structures located in this field. Toge ...

Edp Sciences S A2012

Galaxies In X-Ray Groups. I. Robust Membership Assignment And The Impact Of Group Environments On Quenching

Jean-Paul Richard Kneib

Understanding the mechanisms that lead dense environments to host galaxies with redder colors, more spheroidal morphologies, and lower star formation rates than field populations remains an important problem. As most candidate processes ultimately depend o ...

2011

The simulated 21 cm signal during the epoch of reionization: full modeling of the Ly-alpha pumping

Yves Revaz

The 21 cm emission of neutral hydrogen is the most promising probe of the epoch of reionization (EoR). In the next few years, the SKA pathfinders will provide statistical measurements of this signal, such as its power spectrum. Within one decade, SKA shoul ...

2009

THE ENVIRONMENTS OF STARBURST AND POST-STARBURST GALAXIES AT z=0.4-0.8

Pascale Jablonka

Post-starburst (E+A or k+a) spectra, characterized by their exceptionally strong Balmer lines in absorption and the lack of emission lines, belong to galaxies in which the star formation (SF) activity ended abruptly sometime during the past Gyr. We perform ...

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

Evolution of the early-type galaxy fraction in clusters since z=0.8

Pascale Jablonka

We study the morphological content of a large sample of high-redshift clusters to determine its dependence on cluster mass and redshift. Quantitative morphologies are based on PSF-convolved, 2D bulge+disk decompositions of cluster and field galaxies on dee ...

2009

Cold gas in the Perseus cluster core: excitation of molecular gas in filaments

Yves Revaz

We have recently detected CO lines in the well-known filaments around NGC 1275, the galaxy at the centre of the Perseus cluster of galaxies. These previous observations, with the HERA multi-beam array at the IRAM 30 m telescope enabled us to make a large m ...

2008

SWISSCASE : development and characterization of an electron cyclotron resonance ion source for the calibration of space flight instruments

This PhD thesis consists of planning, simulating, building, testing and characterizing a new electron cyclotron resonance (ECR) ion source, SWISSCASE. the Solar Wind Ion Source Simulator for the CAlibration of Space Experiments located at the University of ...

EPFL2008