Publications associées à Formation et évolution des galaxies

The GOGREEN Survey: Evidence of an Excess of Quiescent Disks in Clusters at 1.0

We present the results of the measured shapes of 832 galaxies in 11 galaxy clusters at 1.0 < z < 1.4 from the GOGREEN survey. We measure the axis ratio (q), the ratio of the minor to the major axis, of the cluster galaxies from near-infrared Hubble Space T ...

IOP Publishing Ltd2021

The AGORA High-resolution Galaxy Simulations Comparison Project. III. Cosmological Zoom-in Simulation of a Milky Way-mass Halo

Yves Revaz, Loïc Hausammann, Alessandro Lupi

We present a suite of high-resolution cosmological zoom-in simulations to z = 4 of a 10(12) M (circle dot) halo at z = 0, obtained using seven contemporary astrophysical simulation codes (Art-I, Enzo, Ramses, Changa, Gadget-3, Gear, and Gizmo) widely used ...

IOP PUBLISHING LTD2021

The GOGREEN and GCLASS surveys: first data release

Pascale Jablonka, Hung-Hsu Chan

We present the first public data release of the GOGREEN (Gemini Observations of Galaxies in Rich Early Environments) and GCLASS (Gemini CLuster Astrophysics Spectroscopic Survey) surveys of galaxies in dense environments, spanning a redshift range 0.8 < z ...

OXFORD UNIV PRESS2021

Testing the evolution of correlations between supermassive black holes and their host galaxies using eight strongly lensed quasars

Aymeric Alexandre Galan, Adriano Agnello

One of the main challenges in using high-redshift active galactic nuclei (AGNs) to study the correlations between the mass of a supermassive black hole (M-BH) and the properties of its active host galaxy is instrumental resolution. Strong lensing magnifica ...

OXFORD UNIV PRESS2021

The GOGREEN survey: Internal dynamics of clusters of galaxies at redshift 0.9-1.4

Pascale Jablonka, Hung-Hsu Chan

Context. The study of galaxy cluster mass profiles (M(r)) provides constraints on the nature of dark matter and on physical processes affecting the mass distribution. The study of galaxy cluster velocity anisotropy profiles (beta (r)) informs the orbits of ...

EDP SCIENCES S A2021

Tightening weak lensing constraints on the ellipticity of galaxy-scale dark matter haloes

Anand Stéphane Raichoor

Cosmological simulations predict that galaxies are embedded into triaxial dark matter haloes, which appear approximately elliptical in projection. Weak gravitational lensing allows us to constrain these halo shapes and thereby test the nature of dark matte ...

EDP SCIENCES S A2021

Origin of stellar prolate rotation in a cosmologically simulated faint dwarf galaxy

Pascale Jablonka, Yves Revaz

Stellar prolate rotation in dwarf galaxies is rather uncommon, with only two known galaxies in the Local Group showing such feature (Phoenix and And II). Cosmological simulations show that in massive early-type galaxies prolate rotation likely arises from ...

OXFORD UNIV PRESS2021

Halo Mass-concentration Relation at the High-mass End

Jean-Paul Richard Kneib, Huanyuan Shan, Ginevra Favole

The concentration-mass (c-M) relation encodes key information about the assembly history of dark matter halos. However, its behavior at the high mass end has not been measured precisely in observations yet. In this paper, we report the measurement of the h ...

IOP Publishing Ltd2021

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Formation et évolution des galaxies

The GOGREEN Survey: Evidence of an Excess of Quiescent Disks in Clusters at 1.0

The AGORA High-resolution Galaxy Simulations Comparison Project. III. Cosmological Zoom-in Simulation of a Milky Way-mass Halo

The GOGREEN and GCLASS surveys: first data release

Testing the evolution of correlations between supermassive black holes and their host galaxies using eight strongly lensed quasars

The GOGREEN survey: Internal dynamics of clusters of galaxies at redshift 0.9-1.4

Tightening weak lensing constraints on the ellipticity of galaxy-scale dark matter haloes

Origin of stellar prolate rotation in a cosmologically simulated faint dwarf galaxy

The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: N-body mock challenge for galaxy clustering measurements

Halo Mass-concentration Relation at the High-mass End

Advances in constraining intrinsic alignment models with hydrodynamic simulations

Graph Chatbot

Chattez avec Graph Search

The GOGREEN survey: Internal dynamics of clusters of galaxies at redshift 0.9-1.4

The AGORA High-resolution Galaxy Simulations Comparison Project. III. Cosmological Zoom-in Simulation of a Milky Way-mass Halo

The GOGREEN and GCLASS surveys: first data release

The GOGREEN Survey: Evidence of an Excess of Quiescent Disks in Clusters at 1.0

Tightening weak lensing constraints on the ellipticity of galaxy-scale dark matter haloes

Testing the evolution of correlations between supermassive black holes and their host galaxies using eight strongly lensed quasars

Origin of stellar prolate rotation in a cosmologically simulated faint dwarf galaxy

The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: N-body mock challenge for galaxy clustering measurements

Halo Mass-concentration Relation at the High-mass End

Advances in constraining intrinsic alignment models with hydrodynamic simulations