Astronomy & Astrophysics (A&A)

Open Access

Euclid - I. Overview of the Euclid mission

Euclid Collaboration, Y. Mellier, Abdurro’uf, J. A. Acevedo Barroso, A. Achúcarro, J. Adamek, R. Adam, G. E. Addison, N. Aghanim, M. Aguena et al. (1130 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450810

Open Access

Euclid - II. The VIS instrument

Euclid Collaboration, M. S. Cropper, A. Al-Bahlawan, J. Amiaux, S. Awan, R. Azzollini, K. Benson, M. Berthe, J. Boucher, E. Bozzo et al. (425 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450996

Open Access

Euclid - III. The NISP Instrument

Euclid Collaboration, K. Jahnke, W. Gillard, M. Schirmer, A. Ealet, T. Maciaszek, E. Prieto, R. Barbier, C. Bonoli, L. Corcione et al. (431 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450786

Open Access

Euclid - IV. The NISP Calibration Unit

Euclid Collaboration, F. Hormuth, K. Jahnke, M. Schirmer, C. G.-Y. Lee, T. Scott, R. Barbier, S. Ferriol, W. Gillard, F. Grupp et al. (325 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450345

Open Access

Euclid - V. The Flagship galaxy mock catalogue: A comprehensive simulation for the Euclid mission

Euclid Collaboration, F. J. Castander, P. Fosalba, J. Stadel, D. Potter, J. Carretero, P. Tallada-Crespí, L. Pozzetti, M. Bolzonella, G. A. Mamon et al. (360 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450853

Open Access

Euclid: Early Release Observations – Programme overview and pipeline for compact- and diffuse-emission photometry

J.-C. Cuillandre, E. Bertin, M. Bolzonella, H. Bouy, S. Gwyn, S. Isani, M. Kluge, O. Lai, A. Lançon, D. A. Lang et al. (256 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450803

Open Access

Euclid: Early Release Observations – A glance at free-floating newborn planets in the σ Orionis cluster

E. L. Martín, M. Žerjal, H. Bouy, D. Martin-Gonzalez, S. Muñoz Torres, D. Barrado, J. Olivares, A. Pérez-Garrido, P. Mas-Buitrago, P. Cruz et al. (174 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450793

Press Release

Open Access

Euclid: Early Release Observations – Unveiling the morphology of two Milky Way globular clusters out to their periphery

D. Massari, E. Dalessandro, D. Erkal, E. Balbinot, J. Bovy, I. McDonald, A. M. N. Ferguson, S. S. Larsen, A. Lançon, F. Annibali et al. (151 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202449696

Open Access

Euclid: Early Release Observations – Deep anatomy of nearby galaxies

L. K. Hunt, F. Annibali, J.-C. Cuillandre, A. M. N. Ferguson, P. Jablonka, S. S. Larsen, F. R. Marleau, E. Schinnerer, M. Schirmer, C. Stone et al. (189 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450781

Open Access

Euclid: Early Release Observations – Globular clusters in the Fornax galaxy cluster, from dwarf galaxies to the intracluster field

T. Saifollahi, K. Voggel, A. Lançon, Michele Cantiello, M. A. Raj, J.-C. Cuillandre, S. S. Larsen, F. R. Marleau, A. Venhola, M. Schirmer et al. (189 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450784

Open Access

Euclid: Early Release Observations – Overview of the Perseus cluster and analysis of its luminosity and stellar mass functions

J.-C. Cuillandre, M. Bolzonella, A. Boselli, F. R. Marleau, M. Mondelin, J. G. Sorce, C. Stone, F. Buitrago, Michele Cantiello, K. George et al. (192 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450808

Open Access

Euclid: Early Release Observations – Dwarf galaxies in the Perseus galaxy cluster

F. R. Marleau, J.-C. Cuillandre, M. Cantiello, D. Carollo, P.-A. Duc, R. Habas, L. K. Hunt, P. Jablonka, M. Mirabile, M. Mondelin et al. (186 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450799

Open Access

Euclid: Early Release Observations – The intracluster light and intracluster globular clusters of the Perseus cluster

M. Kluge, N. A. Hatch, M. Montes, J. B. Golden-Marx, A. H. Gonzalez, J.-C. Cuillandre, M. Bolzonella, A. Lançon, R. Laureijs, T. Saifollahi et al. (178 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202450772

Open Access

Euclid: The Early Release Observations Lens Search Experiment

J. A. Acevedo Barroso, C. M. O’Riordan, B. Clément, C. Tortora, T. E. Collett, F. Courbin, R. Gavazzi, R. B. Metcalf, V. Busillo, I. T. Andika et al. (199 more)

Published online: 30 April 2025

DOI: https://doi.org/10.1051/0004-6361/202451868