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2025
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OpenAlex
Lesci G, Sereno M, Radovich M, Castignani G et autres
Aims. We derived galaxy colour selections from Euclid and ground-based photometry, aiming to accurately define background galaxy samples in cluster weak-lensing analyses. These selections have been implemented in the Euclid data analysis pipelines for galaxy clusters. Methods. Given any set of photometric …
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OpenAlex
Nagam BC, Acevedo Barroso JA, Wilde Michael J, Andika IT et autres
© 2025 The Authors. 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 …
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OpenAlex
Bergamini P, Meneghetti M, Angora G, Bazzanini L et autres
© The Authors 2025.We present HST2EUCLID, a novel Python code to generate Euclid realistic mock images in the HE, JE, YE, and IE photometric bands based on panchromatic Hubble Space Telescope observations. The software was used to create a simulated database of …
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OpenAlex
Pearce-Casey R, Nagam BC, Wilde Michael J, Busillo V et autres
© The Authors 2025.The Euclid Wide Survey (EWS) is predicted to find approximately 170 000 galaxy-galaxy strong lenses from its lifetime observation of 14 000 deg2 of the sky. Detecting this many lenses by visual inspection with professional astronomers and citizen scientists …
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OpenAlex
Banados E, Le Brun V, Belladitta S, Momcheva I et autres
© 2025 The Author(s). We demonstrate the potential of Euclid 's slitless spectroscopy to discover high-redshift (5$]]>) quasars and their main photometric contaminant, ultracool dwarfs. Sensitive infrared spectroscopy from space is able to efficiently identify both populations, as demonstrated by Euclid Near-Infrared …
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OpenAlex
Kovacic I, Baes M, Nersesian A, Andreadis N et autres
© The Authors 2025.The Euclid mission is generating a vast amount of imaging data in four broadband filters at a high angular resolution. This data will allow for the detailed study of mass, metallicity, and stellar populations across galaxies that will constrain …
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OpenAlex
Voggel K, Lancon A, Saifollahi T, Larsen SS et autres
© The Authors 2025.Extragalactic globular clusters (EGCs) are an abundant and powerful tracer of galaxy dynamics and formation, and their own formation and evolution is also a matter of extensive debate. The compact nature of globular clusters means that they are hard …
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OpenAlex
A. Humphrey, Cunha PAC, Bisigello L, Tortora C et autres
© The Authors 2025.The Euclid Space Telescope will image about 14 000 deg2 of the extragalactic sky at visible and near-infrared wavelengths, providing a dataset of unprecedented size and richness that will facilitate a multitude of studies into the evolution of galaxies. …
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Ellien A, Montes M, Ahad SL, Dimauro P et autres
© The Authors 2025.Intracluster light (ICL) provides a record of the dynamical interactions undergone by clusters, giving clues on cluster formation and evolution. Here, we analyse the properties of ICL in the massive cluster Abell 2390 at redshift z = 0.228. Our …
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OpenAlex
Acevedo Barroso JA, O'riordan CM, B. Clément, Tortora C et autres
© The Authors 2025. We investigated the ability of the Euclid telescope to detect galaxy-scale gravitational lenses. To do so, we performed a systematic visual inspection of the 0.7 deg2 Euclid Early Release Observations data towards the Perseus cluster using both the …
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OpenAlex
Kluge M, Hatch NA, Montes M, Golden-Marx JB et autres
© The Authors 2025. We study the intracluster light (ICL) and intracluster globular clusters (ICGCs) in the nearby Perseus cluster of galaxies using Euclid’s Early Release Observations. By modelling the isophotal and iso-density contours, we mapped the distributions and properties of the …
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OpenAlex
O'riordan CM, Oldham LJ, Nersesian A, Li T et autres
© The Authors 2025.We report the discovery of a complete Einstein ring around the elliptical galaxy NGC 6505, at z = 0.042. This is the first strong gravitational lens discovered in Euclid and the first in an NGC object from any survey. …