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arXiv · 2610.29684

Euclid Quick Data Release (Q1). A systematic study of the intracluster light fraction at 0.2 < z < 1.5

Euclid Collaboration·H. Gully·N. A. Hatch·H. Gao·S. P. Bamford·J. B. Golden-Marx·A. Fernandez·T. Kolcu·Y. M. Bahé·A. H. Gonzalez·M. Montes·M. Urbano·H. J. Brown·G. Martin·L. Moscardini·F. Durret·S. L. Ahad·J. G. Sorce·B. Altieri·S. Andreon·N. Auricchio·C. Baccigalupi·M. Baldi·S. Bardelli·P. Battaglia·A. Biviano·M. Bolzonella·E. Branchini·M. Brescia·S. Camera·V. Capobianco·C. Carbone·V. F. Cardone·J. Carretero·M. Castellano·G. Castignani·S. Cavuoti·K. C. Chambers·A. Cimatti·C. Colodro-Conde·G. Congedo·C. J. Conselice·L. Conversi·Y. Copin·A. Costille·F. Courbin·H. M. Courtois·M. Cropper·H. Degaudenzi·G. De Lucia·H. Dole·F. Dubath·X. Dupac·A. Ealet·S. Escoffier·M. Farina·R. Farinelli·F. Faustini·S. Ferriol·F. Finelli·P. Fosalba·S. Fotopoulou·N. Fourmanoit·M. Frailis·E. Franceschi·M. Fumana·L. Gabarra·S. Galeotta·K. George·B. Gillis·C. Giocoli·J. Gracia-Carpio·A. Grazian·F. Grupp·S. Gwyn·S. V. H. Haugan·S. Hemmati·H. Hoekstra·W. Holmes·F. Hormuth·A. Hornstrup·K. Jahnke·M. Jhabvala·B. Joachimi·S. Kermiche·A. Kiessling·B. Kubik·M. Kümmel·M. Kunz·H. Kurki-Suonio·A. M. C. Le Brun·S. Ligori·P. B. Lilje·V. Lindholm·I. Lloro·M. Magliocchetti·G. Mainetti·D. Maino·O. Mansutti·O. Marggraf
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Abstract

We present a homogeneous analysis of the intracluster light (ICL) in approximately 300 galaxy clusters spanning $0.2 10^{10}\,M_\odot$). The inferred ICL fraction also depends systematically on wavelength, while remaining largely insensitive to the adopted outer integration radius of 200-600 kpc. These results highlight the importance of homogeneous ICL analyses and constrain the evolution of diffuse stellar components in clusters.

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Euclid Collaboration, H. Gully, N. A. Hatch, H. Gao, S. P. Bamford, J. B. Golden-Marx, A. Fernandez, T. Kolcu, Y. M. Bahé, A. H. Gonzalez, M. Montes, M. Urbano, H. J. Brown, G. Martin, L. Moscardini, F. Durret, S. L. Ahad, J. G. Sorce, B. Altieri, S. Andreon, N. Auricchio, C. Baccigalupi, M. Baldi, S. Bardelli, P. Battaglia, A. Biviano, M. Bolzonella, E. Branchini, M. Brescia, S. Camera, V. Capobianco, C. Carbone, V. F. Cardone, J. Carretero, M. Castellano, G. Castignani, S. Cavuoti, K. C. Chambers, A. Cimatti, C. Colodro-Conde, G. Congedo, C. J. Conselice, L. Conversi, Y. Copin, A. Costille, F. Courbin, H. M. Courtois, M. Cropper, H. Degaudenzi, G. De Lucia, H. Dole, F. Dubath, X. Dupac, A. Ealet, S. Escoffier, M. Farina, R. Farinelli, F. Faustini, S. Ferriol, F. Finelli, P. Fosalba, S. Fotopoulou, N. Fourmanoit, M. Frailis, E. Franceschi, M. Fumana, L. Gabarra, S. Galeotta, K. George, B. Gillis, C. Giocoli, J. Gracia-Carpio, A. Grazian, F. Grupp, S. Gwyn, S. V. H. Haugan, S. Hemmati, H. Hoekstra, W. Holmes, F. Hormuth, A. Hornstrup, K. Jahnke, M. Jhabvala, B. Joachimi, S. Kermiche, A. Kiessling, B. Kubik, M. Kümmel, M. Kunz, H. Kurki-Suonio, A. M. C. Le Brun, S. Ligori, P. B. Lilje, V. Lindholm, I. Lloro, M. Magliocchetti, G. Mainetti, D. Maino, O. Mansutti, O. Marggraf. 2026-10-21. Euclid Quick Data Release (Q1). A systematic study of the intracluster light fraction at 0.2 < z < 1.5. https://arxiv.org/abs/2610.29684

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