Astronomy & Astrophysics (A&A)

Volume 708 (April 2026)
(in progress)

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Interstellar nebula powered by microquasar SS 433 (Sunyaev, R.., et al., 2026, A&A, 707, A278)

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)
ZTF SN Ia DR2

Open Access

Thermal clustering of solid ethane with potential relevance to Charon’s Mordor region

C. J. Gimar, U. Raut, W. M. Grundy, B. D. Teolis and J. A. Kammer

A&A, 708 (2026) L6

Published online: 01 April 2026
Open Access

Impact of in situ nuclear networks and atomic opacities on neutron star merger ejecta dynamics, nucleosynthesis, and kilonovae

Fabio Magistrelli, Sebastiano Bernuzzi, Albino Perego, Maximilian Jacobi and Christopher J. Fontes

A&A, 708 (2026) A126

Published online: 01 April 2026
Open Access

Mechanisms Affecting Galaxies Nearby and Environmental Trends (MAGNET)

Benedetta Vulcani, Gabriella De Lucia, Daria Zakharova, Paolo Serra, Lizhi Xie, Stefania Barsanti, Bianca Maria Poggianti, Alessia Moretti, Marco Gullieuszik, Yannick Bahé et al. (21 more)

A&A, 708 (2026) A141

Published online: 01 April 2026
Press Release
Open Access

QSOFEED: Investigating warm molecular, low- and high-ionization atomic gas in six type-2 quasars with GTC/EMIR

P. H. Cezar, M. Coloma Puga, C. Ramos Almeida, J. A. Acosta-Pulido, G. Speranza, L. R. Holden, C. N. Tadhunter, M. V. Zanchettin and A. Audibert

A&A, 708 (2026) A12

Published online: 01 April 2026
Open Access

Exploring the ultra-faint dwarf Boötes I using JWST and HST: Metallicity distribution and binaries

F. Muratore, M. V. Legnardi, A. P. Milone, A. Mastrobuono-Battisti, G. Cordoni, L. N. Gorza, E. P. Lagioia, E. Bortolan, E. Dondoglio, A. F. Marino and T. Ziliotto

A&A, 708 (2026) A100

Published online: 01 April 2026
Open Access

Lyα visibility from z = 4.5 to 11 in the UDS field: Evidence for a high neutral hydrogen fraction and small ionized bubbles at z ∼ 7

L. Napolitano, L. Pentericci, M. Dickinson, P. Arrabal Haro, A. J. Taylor, A. Calabrò, A. Bhagwat, P. Santini, F. Arevalo-Gonzalez, R. Begley et al. (21 more)

A&A, 708 (2026) A102

Published online: 01 April 2026
Open Access

MUSE-DARK - I. Dark matter halo properties of intermediate-z star-forming galaxies

B. I. Ciocan, N. F. Bouché, J. Fensch, W. Mercier, D. Krajnović, J. Richard, T. Contini and A. Jeanneau

A&A, 708 (2026) A112

Published online: 01 April 2026
Open Access

The HST-Hyperion survey: Environmental imprints on the stellar mass function at z ∼ 2.5

Derek Sikorski, Ben Forrest, Brian C. Lemaux, Lu Shen, Finn Giddings, Roy Gal, Olga Cucciati, Emmet Golden-Marx, Weida Hu, Denise Hung et al. (12 more)

A&A, 708 (2026) A114

Published online: 01 April 2026

Most downloaded articles

4524	Open Access FENRIR: A statistical model of stellar variability - I. A physics-based, fast Gaussian process model to represent stellar activity and perform statistical Doppler imaging Nathan C. Hara and Jean-Baptiste Delisle A&A, 696 (2025) A141 Published online: 17 April 2025
4283	Free Access Photodissociation and photoionisation of atoms and molecules of astrophysical interest A. N. Heays, A. D. Bosman and E. F. van Dishoeck A&A, 602 (2017) A105 Published online: 23 June 2017
2735	Press Release Open Access Solar twins in Gaia DR3 GSP-Spec - I. Building a large catalog of solar twins with ages Daisuke Taniguchi, Patrick de Laverny, Alejandra Recio-Blanco, Takuji Tsujimoto and Pedro A. Palicio A&A, 707 (2026) A260 Published online: 12 March 2026
1997	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
1581	Open Access Significance mode analysis (SigMA) for hierarchical structures - An application to the Sco-Cen OB association Sebastian Ratzenböck, Josefa E. Großschedl, Torsten Möller, João Alves, Immanuel Bomze and Stefan Meingast A&A, 677 (2023) A59 Published online: 06 September 2023

Volume 708 (April 2026) (in progress)
See the table of contents
Volume 707 (March 2026) (in progress)
1. Non-thermal filaments in the cluster Abell 2255 (De Rubeis, E., et al., 2026, A&A, 707, A49)
2. Turbulent burning in electron capture supernovae (Holas, A., et al., 2026, A&A, 707, A84)
3. A section of the Galactic plane in LoTSS-DR3 (Shimwell, T. W., et al., 2026, A&A, 707, A198)
4. β Pic submicro-arcsecond astrometry with GRAVITY+ (GRAVITY+ Collaboration, 2026, A&A, 707, A115)
5. Interstellar nebula powered by microquasar SS 433 (Sunyaev, R.., et al., 2026, A&A, 707, A278)
See the table of contents
Volume 706 (February 2026)
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)
7. The tidal disruption of a rubble-pile Phobos (Agrusa, H. & Michel, P., 2026, A&A, 706, A353)
See the table of contents

10325	Euclid on Sky 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) A&A, 697 (2025) A1 Published online: 30 April 2025
6605	Press Release Open Access Solar twins in Gaia DR3 GSP-Spec - I. Building a large catalog of solar twins with ages Daisuke Taniguchi, Patrick de Laverny, Alejandra Recio-Blanco, Takuji Tsujimoto and Pedro A. Palicio A&A, 707 (2026) A260 Published online: 12 March 2026
6494	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
6025	Free Access Photodissociation and photoionisation of atoms and molecules of astrophysical interest A. N. Heays, A. D. Bosman and E. F. van Dishoeck A&A, 602 (2017) A105 Published online: 23 June 2017
5586	Open Access FENRIR: A statistical model of stellar variability - I. A physics-based, fast Gaussian process model to represent stellar activity and perform statistical Doppler imaging Nathan C. Hara and Jean-Baptiste Delisle A&A, 696 (2025) A141 Published online: 17 April 2025

22645	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
15886	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
14582	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
12584	Euclid on Sky 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) A&A, 697 (2025) A1 Published online: 30 April 2025
10021	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

Astronomy & Astrophysics

Latest highlightsAll

Latest volumeAll

SUBSCRIBE TO OPEN (S2O)

FEATURED IMAGE All

Latest special issuesAll

Thermal clustering of solid ethane with potential relevance to Charon’s Mordor region

Impact of in situ nuclear networks and atomic opacities on neutron star merger ejecta dynamics, nucleosynthesis, and kilonovae

Mechanisms Affecting Galaxies Nearby and Environmental Trends (MAGNET)

QSOFEED: Investigating warm molecular, low- and high-ionization atomic gas in six type-2 quasars with GTC/EMIR

Exploring the ultra-faint dwarf Boötes I using JWST and HST: Metallicity distribution and binaries

Lyα visibility from z = 4.5 to 11 in the UDS field: Evidence for a high neutral hydrogen fraction and small ionized bubbles at z ∼ 7

MUSE-DARK - I. Dark matter halo properties of intermediate-z star-forming galaxies

The HST-Hyperion survey: Environmental imprints on the stellar mass function at z ∼ 2.5

FENRIR: A statistical model of stellar variability - I. A physics-based, fast Gaussian process model to represent stellar activity and perform statistical Doppler imaging

Photodissociation and photoionisation of atoms and molecules of astrophysical interest

Solar twins in Gaia DR3 GSP-Spec - I. Building a large catalog of solar twins with ages

Planck 2018 results - VI. Cosmological parameters

Significance mode analysis (SigMA) for hierarchical structures - An application to the Sco-Cen OB association

Euclid - I. Overview of the Euclid mission

Solar twins in Gaia DR3 GSP-Spec - I. Building a large catalog of solar twins with ages

Planck 2018 results - VI. Cosmological parameters

Photodissociation and photoionisation of atoms and molecules of astrophysical interest

FENRIR: A statistical model of stellar variability - I. A physics-based, fast Gaussian process model to represent stellar activity and perform statistical Doppler imaging

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

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

Euclid - I. Overview of the Euclid mission

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

Volume 708 (April 2026) (in progress)

Volume 707 (March 2026) (in progress)

Volume 706 (February 2026)

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