F. Finelli

: A UV-faint quasar in a highly luminous star-forming host galaxy at

S. Belladitta, R Decarli, E. Bañados, F. Walter et autres

Constraining the co-evolution of supermassive black holes and their host galaxies in the first billion years after the Big Bang is essential for understanding the formation of the earliest cosmic structures. Here, we present IRAM/NOrthern Extended Millimeter Array (NOEMA) observations of the …

it, de, nl, us, fr, jp, gb, ca, es (code pays fourni par la source)

: Discovery of 31 new quasars at 6.6 <

D. Yang, J. F. Hennawi, F. Guarneri, J. Wolf et autres

We report the discovery of 31 new high-z quasars in the redshift range 6.6 < z < 7.8. These quasars were selected from approximately 3000 deg2 of sky covered during the first 1.5 years of the Euclid Wide Survey, representing the initial …

: Quick Data Release (Q1) – Watching ICM-selected galaxy clusters with

M. Klein, K. George, J. J. Mohr, B Altieri et autres

Galaxy clusters detected through their X-ray emission or Sunyaev–Zeldovich effect (SZE), both produced by the intracluster medium (ICM), have been successfully used in cosmological and astrophysical studies. To maximise the scientific return and robustness of such studies, complementary information from other datasets …

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. 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 …

ch, fr, gb (code pays fourni par la source)

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 …

ch (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, …

it, fr, at, es (code pays fourni par la source)

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 …

fr, gb, it, in, us, nl, es (code pays fourni par la source)

Euclid. VIII. Populating a dark universe using SciPIC

E. J. Gonzalez, J. Carretero, Z. Baghkhani, F. J. Castander et autres

High-fidelity galaxy mocks are crucial for validating analysis pipelines and for cosmological inference. In this context, the Science Pipeline at PIC ( ) is a pipeline specifically designed for the fast generation of synthetic galaxy catalogues from the halo properties identified in …

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

Euclid: Early Release Observations -- The extended stellar component of the IC10 dwarf galaxy

F. Annibali, A. M. N. Ferguson, P. M. Sanchez-Alarcon, P. Dimauro et autres

We present a detailed analysis of the old, extended stellar component of the Local Group dwarf galaxy IC,10 using deep resolved-star photometry in the VIS and NISP bands of the Euclid Early Release Observations. Leveraging Euclid's unique combination of a wide field …

Euclid: Galaxy SED reconstruction in the PHZ processing function: impact on the PSF and the role of medium-band filters

F Tarsitano, C Schreiber, H Miyatake, A.J Nishizawa et autres

International audience

ch, gb, jp, Zimbabwe, id, sk, at, fi, fr (code pays fourni par la source)

Euclid preparation. Calibrated intrinsic galaxy alignments in the Euclid Flagship simulation

K Hoffmann, R Paviot, B Joachimi, N Tessore et autres

International audience

fr (code pays fourni par la source)