H. Kurki-Suonio

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

W. d'Assignies, M. Manera, C. Padilla, 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 to meet the …

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

: Early Release Observations – The surface brightness and colour profiles of the far outskirts of galaxies in the Perseus cluster

Mondelin M., F. Bournaud, J.-C. Cuillandre, S. Codis et autres

The Perseus field captured by Euclid as part of its Early Release Observations provides a unique opportunity to study cluster environment ranging from outskirts to dense regions. Leveraging unprecedented optical and near-infrared depths, we investigate the stellar structure of massive disc galaxies …

: Relativistic effects in the dipole of the two-point correlation function

F. Lepori, S. Schulz, I. Tutusaus, M-A. Breton et autres

Gravitational redshift and Doppler effects give rise to an antisymmetric component of the galaxy correlation function when cross-correlating two galaxy populations or two different tracers. In this paper, we assess the detectability of these effects in the Euclid spectroscopic galaxy survey. We …

preparation

M. Cropper, A. Da Silva, H. Degaudenzi, G. De Lucia et autres

Data from the Euclid space telescope will enable cosmic shear measurements to be carried out with very small statistical errors, necessitating a corresponding level of systematic error control. A common approach to correct for shear biases involves calibrating shape measurement methods using …