Astronomy & Astrophysics (A&A)

Volume 709 (May 2026)
(in progress)

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JWST image of PLCKG165+67 and arc hosting supernova H0pe (Galan, A., et al., 2026, A&A, 708, A359)

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

The contribution of galaxies to the magnetic field in cosmic voids

K. Seller and G. Sigl

A&A, 709 (2026) A45

Published online: 01 May 2026
Open Access

BlazEr1: The eROSITA blazar catalog - Blazars and blazar candidates in the first eROSITA survey

S. Hämmerich, A. Gokus, F. McBride, P. Weber, L. Marcotulli, A. Zainab, W. Collmar, M. Salvato, J. Wolf, T. Sbarrato et al. (21 more)

A&A, 709 (2026) A37

Published online: 01 May 2026
Open Access

The AGN nature of strong C III] emitters in the early Universe with JWST

F. Arevalo-Gonzalez, R. Tripodi, M. Llerena, L. Pentericci, A. Plat, G. Barro, R. O. Amorín, B. Backhaus, A. Calabrò, N. J. Cleri et al. (14 more)

A&A, 709 (2026) A46

Published online: 01 May 2026
Open Access

A broadband study of FRB 20240114A with the Effelsberg 100-m radio telescope

P. Limaye, L. G. Spitler, N. Manaswini, J. Benáček, F. Eppel, M. Kadler, L. Nicotera and J. Wongphechauxsorn

A&A, 709 (2026) A47

Published online: 01 May 2026
Open Access

The complex relationships between active galactic nuclei, bars, and bulges

I. L. Garland, H. Best, L. F. Fortson, T. Géron, C. J. Lintott, D. O’Ryan, B. D. Simmons, R. J. Smethurst, M. Viskotová, M. Walmsley et al. (2 more)

A&A, 709 (2026) A48

Published online: 01 May 2026
Open Access

Multimessenger flare in the quasar PKS 0446+11

Y. Y. Kovalev, M. F. Aller, A. K. Erkenov, J. L. Gómez, D. C. Homan, P. I. Kivokurtseva, Yu. A. Kovalev, M. L. Lister, P. V. de la Parra, A. V. Plavin et al. (8 more)

A&A, 709 (2026) A50

Published online: 01 May 2026
Open Access

PDRs4All - XIX. The evolution of the PAH ionisation and PAH size distribution across the Orion Bar

Alexandros Maragkoudakis, Christiaan Boersma, Els Peeters, Louis J. Allamandola, Pasquale Temi, Vincent J. Esposito, Jesse D. Bregman, Alessandra Ricca, Felipe Alarcón, Olivier Berné et al. (18 more)

A&A, 709 (2026) A38

Published online: 01 May 2026
Open Access

PDRs4All - XX. The 6–9 μm region as a probe of PAH charge and size in the Orion Bar

Baria Khan, Samuel A. Daza Rodriguez, Els Peeters, Alexander G. G. M. Tielens, Takashi Onaka, Jan Cami, Bethany Schefter, Christiaan Boersma, Felipe Alarcón, Olivier Berné et al. (17 more)

A&A, 709 (2026) A39

Published online: 01 May 2026

Most downloaded articles

3333	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
2470	Open Access The Local Distance Network: A community consensus report on the measurement of the Hubble constant at ∼1% precision H0DN Collaboration, Stefano Casertano, Gagandeep Anand, Richard I. Anderson, Rachael Beaton, Anupam Bhardwaj, John P. Blakeslee, Paula Boubel, Louise Breuval, Dillon Brout et al. (28 more) A&A, 708 (2026) A166 Published online: 10 April 2026
2392	Open Access FAUST - XXX. Dust enhancement in the young binary L1551 IRS 5 N. Cuello, E. Bianchi, F. Ménard, L. Loinard, R. Hernández Garnica, A. Durán, C. Ceccarelli, M. J. Maureira, C. J. Chandler, C. Codella et al. (10 more) A&A, 705 (2026) L16 Published online: 14 January 2026
2172	Free Access KOI-200 b and KOI-889 b: Two transiting exoplanets detected and characterized with Kepler, SOPHIE, and HARPS-N G. Hébrard, J.-M. Almenara, A. Santerne, M. Deleuil, C. Damiani, A. S. Bonomo, F. Bouchy, G. Bruno, R. F. Díaz, G. Montagnier and C. Moutou A&A, 554 (2013) A114 Published online: 13 June 2013
2021	Press Release Open Access Imaging the innermost circumstellar environment of the red supergiant WOH G64 in the Large Magellanic Cloud K. Ohnaka, K.-H. Hofmann, G. Weigelt, J. Th. van Loon, D. Schertl and S. R. Goldman A&A, 691 (2024) L15 Published online: 21 November 2024

Volume 709 (May 2026) (in progress)
See the table of contents
Volume 708 (April 2026) (in progress)
1. JWST-NIRCam images of protoplanetary disks in the Orion Nebula Cluster (Amiot, P., et al., 2026, A&A, 708, A111)
2. Resolved protoplanetary discs at 1.3 mm (Bosschaart, Q., et al., 2026, A&A, 708, A143)
3. Antlia SNR observed in X-rays with eROSITA/SRG (Knies, F., et al., 2026, A&A, 708, A198)
4. JWST image of PLCKG165+67 and arc hosting supernova H0pe (Galan, A., et al., 2026, A&A, 708, A359)
See the table of contents
Volume 707 (March 2026)
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

7056	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
6540	Open Access The Local Distance Network: A community consensus report on the measurement of the Hubble constant at ∼1% precision H0DN Collaboration, Stefano Casertano, Gagandeep Anand, Richard I. Anderson, Rachael Beaton, Anupam Bhardwaj, John P. Blakeslee, Paula Boubel, Louise Breuval, Dillon Brout et al. (28 more) A&A, 708 (2026) A166 Published online: 10 April 2026
4884	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
4563	Highlight Free Access Medium-resolution échelle spectroscopy of the Red Square Nebula, MWC 922 N. Wehres, B. B. Ochsendorf, A. G. G. M. Tielens, N. L. J. Cox, L. Kaper, J. Bally and T. P. Snow A&A, 601 (2017) A69 Published online: 03 May 2017
4444	Open Access FAUST - XXX. Dust enhancement in the young binary L1551 IRS 5 N. Cuello, E. Bianchi, F. Ménard, L. Loinard, R. Hernández Garnica, A. Durán, C. Ceccarelli, M. J. Maureira, C. J. Chandler, C. Codella et al. (10 more) A&A, 705 (2026) L16 Published online: 14 January 2026

15789	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
15613	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
14498	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
10232	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
9750	Highlight Free Access Medium-resolution échelle spectroscopy of the Red Square Nebula, MWC 922 N. Wehres, B. B. Ochsendorf, A. G. G. M. Tielens, N. L. J. Cox, L. Kaper, J. Bally and T. P. Snow A&A, 601 (2017) A69 Published online: 03 May 2017

Astronomy & Astrophysics

Latest highlightsAll

Latest volumeAll

SUBSCRIBE TO OPEN (S2O)

FEATURED IMAGE All

Latest special issuesAll

The contribution of galaxies to the magnetic field in cosmic voids

BlazEr1: The eROSITA blazar catalog - Blazars and blazar candidates in the first eROSITA survey

The AGN nature of strong C III] emitters in the early Universe with JWST

A broadband study of FRB 20240114A with the Effelsberg 100-m radio telescope

The complex relationships between active galactic nuclei, bars, and bulges

Multimessenger flare in the quasar PKS 0446+11

PDRs4All - XIX. The evolution of the PAH ionisation and PAH size distribution across the Orion Bar

PDRs4All - XX. The 6–9 μm region as a probe of PAH charge and size in the Orion Bar

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

The Local Distance Network: A community consensus report on the measurement of the Hubble constant at ∼1% precision

FAUST - XXX. Dust enhancement in the young binary L1551 IRS 5

KOI-200 b and KOI-889 b: Two transiting exoplanets detected and characterized with Kepler, SOPHIE, and HARPS-N

Imaging the innermost circumstellar environment of the red supergiant WOH G64 in the Large Magellanic Cloud

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

The Local Distance Network: A community consensus report on the measurement of the Hubble constant at ∼1% precision

Planck 2018 results - VI. Cosmological parameters

Medium-resolution échelle spectroscopy of the Red Square Nebula, MWC 922

FAUST - XXX. Dust enhancement in the young binary L1551 IRS 5

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

Euclid - I. Overview of the Euclid mission

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

Medium-resolution échelle spectroscopy of the Red Square Nebula, MWC 922

Volume 709 (May 2026) (in progress)

Volume 708 (April 2026) (in progress)

Volume 707 (March 2026)

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