Astronomy & Astrophysics (A&A)

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Millimeter-selected clusters and dusty galaxies (Archipley, M., et al., 2026, A&A, 706, A17)

Astronomy & Astrophysics is published under Subscribe to Open (S2O). S2O is a subscription open access model that relies on library contributions to make content open access for the benefit of the research community. The open access status of the journal is reviewed every year. A&A remains Open Access in 2025 under the Subscribe to Open (S2O) model.
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Latest special issuesAll

Euclid Quick Data Release (Q1) (in progress)
Solar Orbiter First Results (Nominal Mission Phase) (in progress)
ZTF SN Ia DR2

Solar Orbiter First Results (Nominal Mission Phase)

Open Access

Initial radiometric calibration of the HRI_EUV telescope of the EUI instrument on board Solar Orbiter

S. Gissot, F. Auchère, D. Berghmans, B. Giordanengo, A. BenMoussa, J. Rebellato, L. Harra, D. M. Long, P. Rochus, U. Schühle et al. (16 more)

A&A, 706 (2026) A269

Published online: 13 February 2026
Open Access

XMM-Newton multi-year campaign on NGC 55 ULX-1 - Resolving the wind and its variability with RGS

C. Pinto, S. Caserta, F. Barra, Y. Xu, D. Barret, P. Kosec, N. La Palombara, A. Marino, F. Pintore, A. Riggio et al. (5 more)

A&A, 706 (2026) A266

Published online: 13 February 2026
Open Access

Emulating redshift mixing due to blending in weak gravitational lensing

Zekang Zhang, Daniel Gruen, Luca Tortorelli, Shun-Sheng Li and Jamie McCullough

A&A, 706 (2026) A234

Published online: 13 February 2026
Open Access

Galaxy interactions in void substructures: Morphology and stellar populations of two triplets from CAVITY

G. M. Azevedo, A. L. Chies-Santos, R. Riffel, I. Perez, F. Ferrari, R. S. de Souza, M. Argudo-Fernandéz and B. Bidaran

A&A, 706 (2026) A194

Published online: 13 February 2026
Open Access

A deep ALMA Band 3 survey of HDFS/MUSE3D - Survey description and initial results

Hugo Messias, Laura Gomez, Harold Francke, Bill Dent, Belén Alcalde Pampliega, Ruediger Kneissl, Yiqing Song, Dirk Petry, Paulo Cortés and Sergio Martín

A&A, 706 (2026) A236

Published online: 13 February 2026
Open Access

The impact of cosmic voids on AGN activity

Benedict L. Rouse, Patricia B. Tissera, Yetli Rosas-Guevara and Claudia del P. Lagos

A&A, 706 (2026) A237

Published online: 13 February 2026
Open Access

The longest known tails of ram-pressure-stripped star-forming galaxies are caused by an intracluster medium shock in Abell 1367

H. W. Edler, M. Hoeft, S. Bhagat, A. Basu, A. Drabent, K. Rajpurohit, M. Sun, F. de Gasperin, A. Botteon, M. Brüggen et al. (3 more)

A&A, 706 (2026) A240

Published online: 13 February 2026
Open Access

A group of merging galaxies falling into Abell 2142

Aashiya Anitha Shaji, Anaëlle Hallé, Damir Gasymov, Anne-Laure Melchior, Françoise Combes and Andrea Cattaneo

A&A, 706 (2026) A245

Published online: 13 February 2026

Most downloaded articles

2467	Open Access Identifying astrophysical anomalies in 99.6 million source cutouts from the Hubble legacy archive using AnomalyMatch David O’Ryan and Pablo Gómez A&A, 704 (2025) A227 Published online: 16 December 2025
2194	Free Access 2dF-AAOmega spectroscopy of massive stars in the Magellanic Clouds - The north-eastern region of the Large Magellanic Cloud C. J. Evans, J. Th. van Loon, R. Hainich and M. Bailey A&A, 584 (2015) A5 Published online: 13 November 2015
1734	Press Release Free Access Water in star-forming regions: physics and chemistry from clouds to disks as probed by Herschel spectroscopy E. F. van Dishoeck, L. E. Kristensen, J. C. Mottram, A. O. Benz, E. A. Bergin, P. Caselli, F. Herpin, M. R. Hogerheijde, D. Johnstone, R. Liseau et al. (43 more) A&A, 648 (2021) A24 Published online: 09 April 2021
1498	Planck 2018 results Free Access Planck 2018 results - VI. Cosmological parameters Planck Collaboration, N. Aghanim, Y. Akrami, M. Ashdown, J. Aumont, C. Baccigalupi, M. Ballardini, A. J. Banday, R. B. Barreiro, N. Bartolo et al. (172 more) A&A, 641 (2020) A6 Published online: 11 September 2020
1404	Free Access A long term spectroscopic and photometric study of the old nova HR Delphini M. Friedjung, M. Dennefeld and I. Voloshina A&A, 521 (2010) A84 Published online: 25 October 2010

Volume 706 (February 2026) (in progress)
1. Millimeter-selected clusters and dusty galaxies (Archipley, M., et al., 2026, A&A, 706, A17)
See the table of contents
Volume 705 (January 2026)
1. A microquasar shuts down, forming a remnant (Abaroa, L., et al., 2026, A&A, 705, L4)
2. Images zooming in on the main galaxy of the cluster (Han, S., et al., 2026, A&A, 705, A169)
3. ARKS debris discs: dust (orange) and CO gas (blue) (Marino et al., 2026, 705, A195 ; Mac Manamon et al., 2026, 705, A198 ; and the ARKS collaboration)
See the table of contents
Volume 704 (December 2025)
1. Diffuse X-rays near PeVatron 1LHAASO J1740+0948u (Brunelli, G., et al., 2025, A&A, 704, A30)
2. The 8 lensed quasars used for measuring H₀ (TDCOSMO Collaboration, 2025, A&A, 704, A63)
3. JWST-MIRI Spectra of the Delorme 1 system (Mâlin, M., 2025, A&A, 704, A181)
4. Filamentary structure in the Galactic CO emission (Soler, J. D., et al., 2025, A&A, 704, A164)
5. Simulation of a major merger of two dwarf galaxies (Deng, Y., et al., 2025, A&A, 704, A240)
6. M87 ring and magnetic field evolution (2017–2021) (The Event Horizon Telescope Collaboration, 2025, A&A, 704, A91)
7. JWST traces dust evolution at Horsehead's edge (Elyajouri, M., et al., 2025, A&A, 704, A203)
8. Diffuse Galactic cirrus across dust tracers (Liu, Q., et al., 2025, A&A, 704, A269)
See the table of contents

11857	Free Access The chemistry of C₂ and C₃ in the coma of Comet C/1995 O1 (Hale-Bopp) at heliocentric distances r_h ≥ 2.9 AU J. Helbert, H. Rauer, D. C. Boice and W. F. Huebner A&A, 442 3 (2005) 1107-1120 Published online: 14 October 2005
6845	Open Access Identifying astrophysical anomalies in 99.6 million source cutouts from the Hubble legacy archive using AnomalyMatch David O’Ryan and Pablo Gómez A&A, 704 (2025) A227 Published online: 16 December 2025
6348	Open Access Assessing interstellar comet 3I/ATLAS with the 10.4 m Gran Telescopio Canarias and the Two-meter Twin Telescope R. de la Fuente Marcos, M. R. Alarcon, J. Licandro, M. Serra-Ricart, J. de León, C. de la Fuente Marcos, G. Lombardi, A. Tejero, A. Cabrera-Lavers, S. Guerra Arencibia and I. Ruiz Cejudo A&A, 700 (2025) L9 Published online: 05 August 2025
5610	Planck 2018 results Free Access Planck 2018 results - VI. Cosmological parameters Planck Collaboration, N. Aghanim, Y. Akrami, M. Ashdown, J. Aumont, C. Baccigalupi, M. Ballardini, A. J. Banday, R. B. Barreiro, N. Bartolo et al. (172 more) A&A, 641 (2020) A6 Published online: 11 September 2020
5495	Free Access A long term spectroscopic and photometric study of the old nova HR Delphini M. Friedjung, M. Dennefeld and I. Voloshina A&A, 521 (2010) A84 Published online: 25 October 2010

25123	Free Access A long term spectroscopic and photometric study of the old nova HR Delphini M. Friedjung, M. Dennefeld and I. Voloshina A&A, 521 (2010) A84 Published online: 25 October 2010
21399	Free Access The chemistry of C₂ and C₃ in the coma of Comet C/1995 O1 (Hale-Bopp) at heliocentric distances r_h ≥ 2.9 AU J. Helbert, H. Rauer, D. C. Boice and W. F. Huebner A&A, 442 3 (2005) 1107-1120 Published online: 14 October 2005
17266	Open Access Assessing interstellar comet 3I/ATLAS with the 10.4 m Gran Telescopio Canarias and the Two-meter Twin Telescope R. de la Fuente Marcos, M. R. Alarcon, J. Licandro, M. Serra-Ricart, J. de León, C. de la Fuente Marcos, G. Lombardi, A. Tejero, A. Cabrera-Lavers, S. Guerra Arencibia and I. Ruiz Cejudo A&A, 700 (2025) L9 Published online: 05 August 2025
15927	Planck 2018 results Free Access Planck 2018 results - VI. Cosmological parameters Planck Collaboration, N. Aghanim, Y. Akrami, M. Ashdown, J. Aumont, C. Baccigalupi, M. Ballardini, A. J. Banday, R. B. Barreiro, N. Bartolo et al. (172 more) A&A, 641 (2020) A6 Published online: 11 September 2020
14307	Free Access SDSS-based taxonomic classification and orbital distribution of main belt asteroids J. M. Carvano, P. H. Hasselmann, D. Lazzaro and T. Mothé-Diniz A&A, 510 (2010) A43 Published online: 05 February 2010

Astronomy & Astrophysics

Latest highlightsAll

Latest volumeAll

SUBSCRIBE TO OPEN (S2O)

FEATURED IMAGE All

Latest special issuesAll

Initial radiometric calibration of the HRI_EUV telescope of the EUI instrument on board Solar Orbiter

XMM-Newton multi-year campaign on NGC 55 ULX-1 - Resolving the wind and its variability with RGS

Emulating redshift mixing due to blending in weak gravitational lensing

Galaxy interactions in void substructures: Morphology and stellar populations of two triplets from CAVITY

A deep ALMA Band 3 survey of HDFS/MUSE3D - Survey description and initial results

The impact of cosmic voids on AGN activity

The longest known tails of ram-pressure-stripped star-forming galaxies are caused by an intracluster medium shock in Abell 1367

A group of merging galaxies falling into Abell 2142

Identifying astrophysical anomalies in 99.6 million source cutouts from the Hubble legacy archive using AnomalyMatch

2dF-AAOmega spectroscopy of massive stars in the Magellanic Clouds - The north-eastern region of the Large Magellanic Cloud

Water in star-forming regions: physics and chemistry from clouds to disks as probed by Herschel spectroscopy

Planck 2018 results - VI. Cosmological parameters

A long term spectroscopic and photometric study of the old nova HR Delphini

The chemistry of C₂ and C₃ in the coma of Comet C/1995 O1 (Hale-Bopp) at heliocentric distances r_h ≥ 2.9 AU

Identifying astrophysical anomalies in 99.6 million source cutouts from the Hubble legacy archive using AnomalyMatch

Assessing interstellar comet 3I/ATLAS with the 10.4 m Gran Telescopio Canarias and the Two-meter Twin Telescope

Planck 2018 results - VI. Cosmological parameters

A long term spectroscopic and photometric study of the old nova HR Delphini

A long term spectroscopic and photometric study of the old nova HR Delphini

The chemistry of C₂ and C₃ in the coma of Comet C/1995 O1 (Hale-Bopp) at heliocentric distances r_h ≥ 2.9 AU

Assessing interstellar comet 3I/ATLAS with the 10.4 m Gran Telescopio Canarias and the Two-meter Twin Telescope

Planck 2018 results - VI. Cosmological parameters

SDSS-based taxonomic classification and orbital distribution of main belt asteroids

Volume 706 (February 2026) (in progress)

Volume 705 (January 2026)

Volume 704 (December 2025)

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