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Euclid Quick Data Release (Q1)

C. GouinInstitut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne UniversitéC. LaigleSorbonne UniversitéF. SarronLaboratoire MCD, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UT3T. BonnaireÉcole Normale Supérieure - PSLJ. G. SorceUniv. Lille, CNRS, Centrale Lille, UMR 9189 CRIStALN. AghanimInstitut d'Astrophysique SpatialeM. MagliocchettiINAF-Istituto di Astrofisica e Planetologia SpazialiL. QuilleyCentre National de la Recherche ScientifiqueP. BoldriniObservatoire de Paris, PSL Research University 61F. DurretInstitut d’Astrophysique de ParisC. PichonKyung Hee University, Dept. of Astronomy & Space Science, Yongin-shiU. KuchnerSchool of Physics and Astronomy, University of Nottingham, University ParkN. MalavasiMax Planck Institute for Extraterrestrial PhysicsK. KraljicUniversité de Strasbourg, CNRS, Observatoire astronomique de Strasbourg, UMR 7550R. GavazziInstitut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne UniversitéY. KangDepartment of Astronomy, University of GenevaS. A. StanfordP. AwadLeiden Observatory, Leiden UniversityB. AltieriESAC/ESAA. AmaraSchool of Mathematics and Physics, University of Surrey, GuildfordS. AndreonINAF-Osservatorio Astronomico di BreraN AuricchioINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaH. AusselUniversité Paris-SaclayC BaccigalupiINAF-Osservatorio Astronomico di TriesteM. BaldiINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaA. BalestraINAF-Osservatorio Astronomico di PadovaS. BardelliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaA. BassetCentre National d’Etudes Spatiales – Centre spatial de ToulouseP. BattagliaINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaF BernardeauUniversité Paris-SaclayA BivianoINAF-Osservatorio Astronomico di TriesteA. BonchiSpace Science Data Center, Italian Space AgencyE BranchiniDipartimento di Fisica, Università di GenovaM BresciaDepartment of Physics “E. Pancini”, University Federico IIJ. BrinchmannFaculdade de Ciências da Universidade do PortoS CameraINAF-Osservatorio Astrofisico di TorinoG. Cañas-HerreraInstitute Lorentz, Leiden UniversityV. CapobiancoINAF-Osservatorio Astrofisico di TorinoC. CarboneINAF-IASF MilanoJ. CarreteroPort d’Informació Científica, Campus UABM. CastellanoNational Institute for AstrophysicsG CastignaniINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaS. CavuotiINAF-Osservatorio Astronomico di CapodimonteK. C. ChambersInstitute for Astronomy, University of HawaiiA CimattiDipartimento di Fisica e Astronomia “Augusto Righi” – Alma Mater Studiorum Università di BolognaC. Colodro-CondeInstituto de Astrofísica de CanariasG. CongedoInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford HillC. J. ConseliceJodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of ManchesterL. ConversiESAC/ESAY CopinUniversité Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, UMR 5822F. CourbinInstitució Catalana de Recerca i Estudis Avançats (ICREA)H. M. CourtoisLyon CollegeM. CropperUniversity College LondonA. Da SilvaInstituto de Astrofísica e Ciências do Espaço, Faculdade de Ciências, Universidade de Lisboa, Campo GrandeH. DegaudenziDepartment of Astronomy, University of GenevaS de la TorreAix-Marseille Université, CNRS, CNES, LAMG De LuciaINAF-Osservatorio Astronomico di TriesteA. M. Di GiorgioINAF-Istituto di Astrofisica e Planetologia SpazialiC. DoldingMullard Space Science Laboratory, University College London, Holmbury St Mary, DorkingH. DoleUniversité Paris-Saclay, CNRS, Institut d’astrophysique spatialeF. DubathDepartment of Astronomy, University of GenevaC. A. J. DuncanJodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of ManchesterX. DupacESAC/ESAA. EaletCentre National de la Recherche ScientifiqueS. EscoffierCentre de physique des particules de MarseilleM. FabriciusMax Planck Institute for Extraterrestrial PhysicsM. FarinaINAF-Istituto di Astrofisica e Planetologia SpazialiF. FaustiniUnited Kingdom Space AgencyS. FerriolCentre National de la Recherche ScientifiqueF FinelliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaS. FotopoulouSchool of Physics, HH Wills Physics Laboratory, University of BristolM. FrailisINAF-Osservatorio Astronomico di TriesteE. FranceschiINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaS. GaleottaINAF-Osservatorio Astronomico di TriesteK GeorgeUniversitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität MünchenB. GillisInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford HillC. GiocoliINAF-Osservatorio di Astrofisica e Scienza dello Spazio di BolognaP. Gómez-AlvarezFRACTAL S.L.N.EJ Gracia-CarpioMax Planck Institute for Extraterrestrial PhysicsB. R. GranettINAF-Osservatorio Astronomico di BreraA. GrazianINAF-Osservatorio Astronomico di PadovaF. GruppMax Planck Institute for Extraterrestrial PhysicsS. GwynNRC HerzbergS. V. H. HauganInstitute of Theoretical Astrophysics, University of OsloW. L. HolmesJet Propulsion Laboratory, California Institute of TechnologyI. M. HookDepartment of Physics, Lancaster UniversityF. HormuthFelix Hormuth EngineeringA HornstrupTechnical University of DenmarkP. HudelotInstitut d’Astrophysique de Paris, UMR 7095, CNRS, and Sorbonne UniversitéK. JahnkeMax-Planck-Institut für AstronomieM. JhabvalaNASA Goddard Space Flight CenterB. JoachimiDepartment of Physics and Astronomy, University College LondonE KeihänenS. KermicheCentre de physique des particules de MarseilleA. KiesslingJet Propulsion Laboratory, California Institute of TechnologyM. KilbingerUniversité Paris CitéB. KubikUniversité Claude Bernard Lyon 1, CNRS/IN2P3, IP2I Lyon, UMR 5822M. KümmelUniversitäts-Sternwarte München, Fakultät für Physik, Ludwig-Maximilians-Universität MünchenM KunzUniversité de Genève, Département de Physique Théorique and Centre for Astroparticle PhysicsH Kurki-SuonioDepartment of Physics
2026en
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ABI

Annotatsiya

The matter around galaxy clusters is distributed over several filaments, reflecting their positions as nodes in the large-scale cosmic web. The number of filaments connected to a cluster, i.e. its connectivity, is expected to affect the physical properties of clusters. Using the first Euclid galaxy catalogue from the Euclid Quick Release 1 (Q1), we investigated the connectivity of galaxy clusters and how it correlates with their physical and galaxy member properties. Around 220 clusters located within the three fields of Q1 (covering ∼63 deg 2 ) were analysed in the redshift range 0.2 < z < 0.7. Due to the photometric redshift uncertainty, we reconstructed the cosmic web skeleton, and measured the cluster connectivity, in 2D projected slices with a thickness of 170 comoving h −1 Mpc and centred on each cluster redshift, by using two different filament finder algorithms on the most massive galaxies ( M ★ > 10 10.3 M ⊙ ). In agreement with previous measurements, we recovered the mass-connectivity relation independently of the filament detection algorithm, showing that the most massive clusters are, on average, connected to a larger number of cosmic filaments, consistent with hierarchical structure formation models. Furthermore, we explored the possible correlations between connectivities and two cluster properties: the fraction of early-type galaxies and the Sérsic index of galaxy members. Our result suggests that the clusters populated by early-type galaxies exhibit higher connectivity compared to clusters dominated by late-type galaxies. These preliminary investigations highlight our ability to quantify the impact of the cosmic web’s connectivity on cluster properties with Euclid .

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DOI
10.1051/0004-6361/202554655

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