| DR1 Key Project | Lead(s) |
| DR1-KP-JC-1: Cosmology from combined photometric and spectroscopic probes | Carmelita Carbone, Isaac Tutusaus, Martin Crocce |
| DR1-KP-JC-2: Euclid cosmological constraints from combined photometric probes | Alessio Spurio Mancini, Nicolas Tessore, Stefano Camera |
| DR1-KP-JC-3: Halo mass profiles from combined strong and weak lensing | Carlo Giocoli, Mauro Sereno, Raphael Gavazzi |
| DR1-KP-CL-1: Cosmological constraints from galaxy clusters | Lauro Moscardini, Matteo Costanzi |
| DR1-KP-CL-2: Accurate cluster shear extraction and modelling for Euclid | Lorenzo Ingoglia, Lucie Baumont, Sebastian Grandis |
| DR1-KP-CL-3: Cluster masses and scaling relations in an astrophysical context | Alexandro Saro, Florian Pacaud |
| DR1-KP-CL-4: The DR1 cluster catalogue and its galaxies | Anthony Gonzalez, Sophie Maurogordato |
| DR1-KP-CL-5: Intracluster Light | Nina Hatch |
| DR1-KP-CL-6: Discovery of Galaxy Protoclusters | Gianluca Castignani, Helmut Dannerbauer |
| DR1-KP-CL-7: Weak Lensing Detection of Galaxy Clusters | Jose M. Diego, Sandrine Pires |
| DR1-KP-CMBX-2: CMB lensing cross-correlation with Euclid observables | Karim Benabed |
| DR1-KP-CMBX-3: Cosmology with combination of Euclid photometric probes and CMB lensing | Karim Benabed, Louis Legrand, Margherita Lembo |
| DR1-KP-CMBX-4: Hot gas in the cosmic web via TSZ cross-correlation with GC, WL and clusters | Laura Salvati |
| DR1-KP-CMBX-5: Peculiar velocities from CMB-Euclid cross-correlation | Carlos Hernandez-Monteagudo |
| DR1-KP-CS-1: Cosmological simulations for Euclid science | Pablo Fosalba |
| DR1-KP-DR-CA: Calibrations | Mischa Schirmer |
| DR1-KP-DR-NIR: NIR Processing and Data Products | Gianluca Polenta |
| DR1-KP-DR-OVER: Data Release Overview | Herve Aussel |
| DR1-KP-DR-PHZ-1: Photometric redshifts | Stephane Paltani |
| DR1-KP-DR-SIR: SIR Processing and Data Products | Yannick Copin |
| DR1-KP-DR-SPE: SPE Processing and Data Products | Vincent Le Brun |
| DR1-KP-DR-SURV:Euclid Surveys | Ismael Tereno |
| DR1-KP-DR-VIS: VIS Processing and Data Products | Henry Joy McCracken |
| DR1-KP-DR-VMPZ: Photometric sample selection and catalogues | Juan Macias-Perez |
| DR1-KP-GC-1: DR1 combined cosmological parameters from galaxy clustering only | Ariel Sanchez, Emiliano Sefusatti |
| DR1-KP-GC-2: Euclid galaxy clustering validation tests and systematic error | Ilaria Risso, Pierlugi Monaco |
| DR1-KP-GC-3: Galaxy clustering catalogues using the DR1 data | Benjamin Granett, Katarina (Dida) Markovic |
| DR1-KP-GC-4: Cosmology from BAO in 2pt galaxy clustering in the DR1 data | Elena Sarpa, Seshadri Nadathur |
| DR1-KP-GC-5: Cosmology from full-fit 2pt clustering in the DR1 data | Alexander Eggemeier, Alkistis Pourtsidou |
| DR1-KP-GC-6: Cosmology with Higher-Order Statistics | Alfonso Veropalumbo |
| DR1-KP-GC-7: Cosmology with cosmic voids | Alice Pisani |
| DR1-KP-LU-1: Euclid’s low surface brightness view of the nearby universe from DR1 | Francine Marleau, Leslie Hunt |
| DR1-KP-LU-2: Stellar populations in nearby galaxies from DR1 | Crescenzo Tortora, Karina Voggel |
| DR1-KP-LU-3: The Fornax Cluster: New insights from Euclid | Enrichetta Iodice, Pierre-Alain Duc |
| DR1-KP-LU-4: Surface Brightness Fluctuation distances with Euclid | Simona Mei |
| DR1-KP-MW-1: Milky Way Globular Clusters | Emanuele Dalessandro, Soren Larsen |
| DR1-KP-MW-2: Local Volume Resolved Stellar Peripheries | Annette Ferguson, Eduardo Balbinot |
| DR1-KP-SL-1: First catalogue of galaxy scale strong lenses in Q1/D | Giulia Despali, Stefan Schuldt, Thomas Collett |
| DR1-KP-SL-4: Validating the strong lensing cluster analysis with Q1/DR1 data | Ana Acebron, Massimo Meneghetti, Pietro Bergamini |
| DR1-KP-SNT-1: Euclid transient search in the Self-Cal field | Isobel Hook, Vincenzo Petrecca |
| DR1-KP-TH-1: Euclid constraints on extended cosmological models | Guadalupe Cañas Herrera, Marco Baldi, Pedro Carrilho |
| DR1-KP-TH-2: Tests of homogeneity and isotropy | Domenico Sapone, Matteo Martinelli |
| DR1-KP-WL-1: Cosmology with 2pt Shear Statistics | Christopher Duncan, Hendrik Hildebrandt, Laila Linke |
| DR1-KP-WL-2: Internal consistency checks for DR1 cosmology with WL 2pt statistics | Benjamin Giblin, Shun-Sheng Li |
| DR1-KP-WL-3: Intrinsic galaxy alignments in Euclid DR1 | Benjamin Joachimi, Romain Paviot |
| DR1-KP-WL-4: Luminosity/Stellar Mass – Halo Mass relation from galaxy-galaxy lensing | Eric Jullo |
| DR1-KP-WL-5: The distribution of dark matter around galaxies from galaxy-galaxy lensing | Mike Hudson |
| DR1-KP-WL-6: The dependence of DM halos on the environment from WL | Divya Rana, Pierre Burger |
| DR1-KP-WL-7: Cosmology with higher-order weak-lensing statistics using mass mapping | Cora Uhlemann, Natalia Porqueres, Nicolas Martinet |
| DR1-KP-WL-8: Cosmology with 3pt Shear Statistics | Elina Keihanen, Lucas Porth |
| DR1-KP-WL-LE3-1: Performance verification of the photometric products from the Euclid SGS | Niall Jeffrey, Samuel Farrens |
| SP-H2RG-PNC: Pixel-to-pixel readout noise correlation in HAWAII-2RG detectors | Michael Seiffert |
| SP-MATCH-WIDE: Optimising Photometric Redshift Calibration in Euclid with an Effective Transfer Function | Yuzheng Kang |
| SP-RG-QSOS-BD: The power of NISP slitless grism spectroscopy on discovering quasars and brown dwarfs | Eduardo Banados |
| SP-Rubin-Euclid-DDP-sims: Euclid-like simulated images for exploration of Rubin-Euclid Derived Data Products | Francisco Javier Castander |
| SP-SL-CNN-ERO: Searches for Strong Gravitational Lenses using CNNs in ERO data of the Perseus Field | Ruby Pearce-Casey |
| SP-TH-alpha: Improved constraints on dark energy coupled to electromagnetism | Carlos Martins |
| SP-WFE-DM: Characterization of the WFE of dichroic mirror | Benoit Sassolas |