A Amara

Euclid : Modelling observational effects in cluster counts and cluster clustering

Alessandra Fumagalli, M. Costanzi, A. Saro, S Borgani et autres

This study explores the impact of observational and modelling systematic effects on cluster number counts and cluster clustering and provides model prescriptions for their joint analysis in the context of the Euclid survey. Using 1000 Euclid -like cluster catalogues, we investigated the …

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Euclid : Discovery of bright z ≃ 7 Lyman-break galaxies in UltraVISTA and Euclid COSMOS

R. G. Varadaraj, R. A. A. Bowler, M. J. Jarvis, J. R. Weaver et autres

We present a search for z ≃ 7 Lyman-break galaxies using the 1.72 deg 2 near-infrared (NIR) UltraVISTA survey in the COSMOS field, reaching 5 σ depths in Y of 26.2. We incorporated deep Euclid optical and Euclid + Spitzer NIR imaging …

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Euclid Quick Data Release (Q1)

B. Margalef-Bentabol, L. Wang, Antonio La Marca, Vicente Rodríguez-Gómez et autres

Active galactic nuclei (AGN) are an important phase in galaxy evolution. However, they can be difficult to identify due to their varied observational signatures. Furthermore, to understand the impact of an AGN on its host galaxy, it is important to quantify the …

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Euclid : Constraints on f(R) cosmologies from the spectroscopic and photometric primary probes

V.F Cardone, D. Sapone, Noemi Frusciante, G. Parimbelli et autres

We forecast the constraints that the Euclid mission will place on the Hu–Sawicki f ( R ) modified gravity model using galaxy clustering and weak lensing observations. Euclid ’s primary probes will provide spectroscopic redshifts, photometric angular clustering, and weak lensing cosmic …

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

Euclid : An emulator for baryonic effects on the matter bispectrum

P.A Burger, Giovanni Aricò, Laila Linke, Raúl E. Angulo et autres

The Euclid mission and other next-generation large-scale structure surveys will enable high-precision measurements of the cosmic matter distribution. Understanding the impact of baryonic processes such as star formation and active galactic nuclei (AGN) feedback on matter clustering is crucial to ensure precise …

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Euclid Quick Data Release (Q1)

G. Girardi, G. Rodighiero, L. Bisigello, A Enia et autres

Our understanding of cosmic star formation at z > 3 used to largely rely on rest-frame UV observations. However, these observations overlook dusty and massive sources, resulting in an incomplete census of early star-forming galaxies. Recent infrared data from Spitzer and the …

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Euclid : Photometric redshift calibration performance with the clustering-redshifts technique in the Flagship 2 simulation

W d'Assignies, Marc Manera, C. Padilla Aranda, O. Ilbert et autres

Aims. The precision of cosmological constraints from imaging surveys hinges on an accurately estimated redshift distribution n ( z ) of the tomographic bins, especially their mean redshifts. We assess the effectiveness of the clustering-redshifts technique in constraining Euclid tomographic redshift bins …

Euclid : Finding strong gravitational lenses in the early release observations using convolutional neural networks

B.C Nagam, J.A. Acevedo Barroso, J. Wilde, I.T Andika et autres

Several new galaxy-galaxy strong gravitational lenses have been detected in the early release observations (ERO) from Euclid . The all-sky survey is expected to find 170 000 new systems, which are expected to greatly enhancing studies of dark matter and dark energy, …

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Euclid Quick Data Release (Q1)

C Laigle, C. Gouin, Florian Sarron, L Quilley et autres

Galaxy morphologies and shape orientations are expected to correlate with their large-scale environments, since they grow by accreting matter from the cosmic web and are subject to interactions with other galaxies. We extracted cosmic filaments in projection from the Euclid Quick Data …

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Euclid Quick Data Release (Q1)

Pablo Corcho-Caballero, Y. Ascasíbar, G. Verdoes Kleijn, Christopher C. Lovell et autres

Investigating what drives the quenching of star formation in galaxies is key to understanding their evolution. The Euclid mission will provide rich spatial and spectral data from optical to infrared wavelengths for millions of galaxies, and enable precise measurements of their star …

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Euclid Quick Data Release (Q1)

M. Siudek, Michael J. Smith, G. Martínez-Solaeche, François Lanusse et autres

Modern astronomical surveys, such as the Euclid mission, produce high-dimensional, multi-modal datasets that include imaging and spectroscopic information for millions of galaxies. These data serve as an ideal benchmark for large, pre-trained multi-modal models, which can leverage vast amounts of unlabelled data. …

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Euclid Quick Data Release (Q1)

Y. Copin, M. Fumana, C. Mancini, P. N. Appleton et autres

The Euclid space mission aims to investigate the nature of dark energy and dark matter by mapping the large-scale structure of the Universe. A key component of Euclid ’s observational strategy is slitless spectroscopy, which is conducted using the Near Infrared Spectrometer …

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