T. Gasparetto

Euclid Quick Data Release (Q1)

R. Hill, A. Abghari, D. Scott, M. Bethermin et autres

The first Euclid Quick Data Release (Q1) contains millions of galaxies with excellent optical and near-infrared (IR) coverage. To complement this dataset, we investigate the average far-IR properties of Euclid-selected main sequence (MS) galaxies using existing Herschel and SCUBA-2 data. We used …

Euclid preparation. CIX. Baryon acoustic oscillation analysis of photometric galaxy clustering in configuration space

V. Duret, S. Escoffier, W Gillard, I Tutusaus et autres

With about 1.5 billion galaxies expected to be observed, the very large number of objects in the Euclid photometric survey will allow for precise studies of galaxy clustering from a single survey, over a large range of redshifts, 0.2 < z < …

fr, gb, es, de, it, pt, nl (code pays fourni par la source)

Euclid preparation. CIX. Baryon acoustic oscillation analysis of photometric galaxy clustering in configuration space

V. Duret, S. Escoffier, W. Gillard, I. Tutusaus et autres

With about 1.5 billion galaxies expected to be observed, the very large number of objects in the Euclid photometric survey will allow for precise studies of galaxy clustering from a single survey, over a large range of redshifts, 0.2 < z < …

Euclid preparation. CVIII. Galaxy power spectrum modelling in redshift space

B. Camacho Quevedo, M. Crocce, M. Pellejero Ibañez, R. E. Angulo et autres

Accurate modelling of redshift-space distortions (RSDs) is essential for maximising the cosmological information extracted from large galaxy redshift surveys. In preparation for the forthcoming analysis of the Euclid spectroscopic data, we investigated three approaches to modelling RSD effects on the power spectrum …

Euclid preparation. CVI. Probing galaxy evolution within cosmic voids in Euclid-like simulations

G. Papini, O. Cucciati, M. Bolzonella, S. Contarini et autres

The evolution of galaxies is profoundly influenced by the environment they reside in. Cosmic voids, the most underdense regions of the Universe, serve as pristine laboratories for studying galaxy evolution in the relative absence or weaker influence of the complex physical processes …

Euclid Quick Data Release (Q1)

B. Laloux, A. Bongiorno, M. Salvato, V. Allevato et autres

The Euclid Quick Data Release (Q1) is a powerful dataset to study active galactic nuclei (AGN) and their host galaxies. Deriving their physical properties through multi-component spectral energy distribution (SED) fitting is a challenging task for AGN, but it is greatly aided …

it, de, es, gb, ch, ca, fr, tw, jp, fi, nl, sk, us, in, pt, rs, no, dk (code pays fourni par la source)

Euclid preparation. CV. CosmoPostProcess: A simulation calibrated framework for weak lensing selection bias in richness-selected galaxy clusters

R. Ingrao, M. Costanzi, T Castro, A. Saro et autres

We present , a simulation-based forward model algorithm calibrated to reproduce optical cluster observables in line with measurements taken with the Euclid space telescope. The main deliverable of is a correction for stacked surface-density profiles, binned in terms of richness and redshift, …

Euclid preparation. CIV. Impact of galaxy intrinsic alignment modelling choices on Euclid 3x2pt cosmology

D. Navarro-Gironés, I. Tutusaus, M. Crocce, S. Gouyou Beauchamps et autres

The Euclid galaxy survey will provide unprecedented constraints on cosmology, but achieving unbiased results will require an optimal characterisation and mitigation of systematic effects. The of galaxies are one of the dominant contaminants of the and probes. In this work, we assess …

Euclid Quick Data Release (Q1)

C. Gouin, C. Laigle, F. Sarron, T. Bonnaire et autres

The matter around galaxy clusters is distributed over several filaments, reflecting their positions as nodes in the large-scale cosmic web. The number of filaments connected to a cluster, i.e. its connectivity, is expected to affect the physical properties of clusters. Using the …

fr, it, Algérie, kr, au, gb, de, ch, nl, us, pt, es, in, ca, no, dk, fi (code pays fourni par la source)

Euclid preparation

L. Zalesky, John R. Weaver, Conor McPartland, Grey Murphree et autres

The Cosmic Dawn Survey pre-launch catalogues cover an effective 10.13 deg 2 area with uniform deep Spitzer /IRAC data ( m ∼ 25 mag, 5 σ ), the largest area covered to these depths at IR wavelengths. We used these data to …

us, dk, es, gb, it, pt, fr, nl, de, ch, ca, no, fi (code pays fourni par la source)

Euclid preparation

P. Monaco, G Parimbelli, MY Elkhashab, J Salvalaggio et autres

We present two extensive sets of 3500+1000 simulations of dark matter haloes on the past light cone and two corresponding sets of simulated (mock) galaxy catalogues that represent the spectroscopic sample of Euclid . The simulations were produced with the latest version …

Euclid preparation LXIII. Simulations and nonlinearities beyond $Λ$CDM. 2. Results from non-standard simulations

Euclid Collaboration, Gábor Rácz, Michel-Andrès Breton, B. Fiorini et autres

The Euclid mission will measure cosmological parameters with unprecedented precision. To distinguish between cosmological models, it is essential to generate realistic mock observables from cosmological simulations that were run in both the standard $Λ$-cold-dark-matter ($Λ$CDM) paradigm and in many non-standard models beyond …

us, fi, fr, es, ro, gb, no, lb, de, it, in, ch, pt, dk (code pays fourni par la source)