Astronomy & Astrophysics (A&A)

Interaction of the central jet with the surrounding gas in the protostellar outflow from IRAS 04166+2706

Search and analysis of giant radio galaxies with associated nuclei (SAGAN). VI. When jets meet filaments -- Environmental imprints on the growth of giant radio galaxies

The superclouds of the local Milky Way

Pre-perihelion evolution of the NiI/FeI abundance ratio in the coma of the interstellar comet 3I/ATLAS: From extreme to normal

Volume 706 (February 2026)
(in progress)

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CH and H<sub>2</sub>O spectra constraining variations α — CH and H₂O spectra constraining variations α (Muller, S., et al., 2026, A&A, 706, A365)

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

Open Access

Hillas meets Eddington: The case for blazars as ultra-high-energy neutrino sources

X. Rodrigues, F. Rieger, A. Bohdan and P. Padovani

A&A, 706 (2026) A351

Published online: 23 February 2026
Open Access

Investigating the emission signatures of pulsar halo candidate HESS J1813-126

Agnibha De Sarkar

A&A, 706 (2026) A378

Published online: 23 February 2026
Open Access

Growth rate measurements from a joint analysis of the large-scale galaxy clustering in Fourier and configuration space

Vincenzo Aronica, Julian E. Bautista, Arnaud de Mattia and Hector Gil-Marín

A&A, 706 (2026) A380

Published online: 23 February 2026
Open Access

The redshifts from 122 bands: Comparative redshift forecast for low-resolution spectra from SPHEREx and the 7-Dimensional Sky Survey (7DS)

Jangho Bae, Bomee Lee, Myungshin Im, Hyeonguk Bahk, Kim Dachan, Ho Seong Hwang, Sungryong Hong, Suk Kim, Minjin Kim, Taewan Kim et al. (14 more)

A&A, 706 (2026) A347

Published online: 23 February 2026
Open Access

The impact of selection criteria on the properties of green valley galaxies

Beatrice Nyiransengiyumva, Mirjana Pović, Pheneas Nkundabakura, Tom Mutabazi and Antoine Mahoro

A&A, 706 (2026) A376

Published online: 23 February 2026
Open Access

The stellar to sub-stellar masses transition in 47 Tuc

C. Ventura, M. Tailo, P. Ventura, F. D’Antona, A. P. Milone, A. F. Marino and C. Fiumi

A&A, 706 (2026) A313

Published online: 23 February 2026
Open Access

Modeling the formation of ultra-faint dwarf spheroidal galaxies in an extreme collapsing scenario - Simulating Ursa Major II using AMUSE

J. I. Vergara Landeros, M. Fellhauer, D. Matus Carrillo and J. A. Cabello Cabello

A&A, 706 (2026) A333

Published online: 23 February 2026
Open Access

Photolysis of interstellar ice analogs containing ethanol: A new approach to forming C₂H₄O₂ isomers

Maya Lemaitre, Lahouari Krim and Laurent Pagani

A&A, 706 (2026) A314

Published online: 23 February 2026

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2734	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
1863	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
1537	Free Access The chemical composition of globular clusters in the Local Group S. S. Larsen, P. Eitner, E. Magg, M. Bergemann, C. A. S. Moltzer, J. P. Brodie, A. J. Romanowsky and J. Strader A&A, 660 (2022) A88 Published online: 14 April 2022
1257	Open Access Lithium depletion boundary, stellar associations, and Gaia F. J. Galindo-Guil, D. Barrado, H. Bouy, J. Olivares, A. Bayo, M. Morales-Calderón, N. Huélamo, L. M. Sarro, P. Rivière-Marichalar, H. Stoev et al. (2 more) A&A, 664 (2022) A70 Published online: 05 August 2022
989	Free Access Linking dust emission to fundamental properties in galaxies: the low-metallicity picture A. Rémy-Ruyer, S. C. Madden, F. Galliano, V. Lebouteiller, M. Baes, G. J. Bendo, A. Boselli, L. Ciesla, D. Cormier, A. Cooray et al. (8 more) A&A, 582 (2015) A121 Published online: 22 October 2015

Volume 706 (February 2026) (in progress)
1. Millimeter-selected clusters and dusty galaxies (Archipley, M., et al., 2026, A&A, 706, A17)
2. CO(2–1) velocity maps of the IRAS 04166 outflow (Tafalla, M., et al., 2026, A&A, 706, A248)
3. Bayesian imaging of LMC SN1987A components (Eberle, V., et al., 2026, A&A, 706, A229)
4. GLOSTAR–Effelsberg map of the Galaxy at 4.9 GHz (Gong, Y., et al., 2026, A&A, 706, A230)
5. Tracing the interplay between stars and gas in M33 (Feltre, A., et al., 2026, A&A, 706, A367)
6. CH and H₂O spectra constraining variations α (Muller, S., et al., 2026, A&A, 706, A365)
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

10897	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
7364	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
4735	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
3774	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
3769	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

24763	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
23439	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
15553	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
14869	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
12003	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

Hillas meets Eddington: The case for blazars as ultra-high-energy neutrino sources

Investigating the emission signatures of pulsar halo candidate HESS J1813-126

Growth rate measurements from a joint analysis of the large-scale galaxy clustering in Fourier and configuration space

The redshifts from 122 bands: Comparative redshift forecast for low-resolution spectra from SPHEREx and the 7-Dimensional Sky Survey (7DS)

The impact of selection criteria on the properties of green valley galaxies

The stellar to sub-stellar masses transition in 47 Tuc

Modeling the formation of ultra-faint dwarf spheroidal galaxies in an extreme collapsing scenario - Simulating Ursa Major II using AMUSE

Photolysis of interstellar ice analogs containing ethanol: A new approach to forming C₂H₄O₂ isomers

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

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

The chemical composition of globular clusters in the Local Group

Lithium depletion boundary, stellar associations, and Gaia

Linking dust emission to fundamental properties in galaxies: the low-metallicity picture

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

Planck 2018 results - VI. Cosmological parameters

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

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

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

Planck 2018 results - VI. Cosmological parameters

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

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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