Astronomy & Astrophysics (A&A)

Latest highlightsAll

Latest volumeAll

Sky distribution of >7 million main sequence halo stars (Koppelman, H. H., & Helmi, A., 2021, A&A, 645, A69)

PUBLISH WITH A&A

Astronomy & Astrophysics is a leading international Journal that publishes papers on all aspects of astronomy and astrophysics (theoretical, observational, and instrumental).

Find out more

Latest special issuesAll

Gaia Early Data Release 3 (open issue)
The Solar Orbiter mission (open issue)
Planck 2018 results
The LOFAR Two Meter Sky Survey (open issue)

Open Access

Crust structure and thermal evolution of neutron stars in soft X-ray transients

A. Y. Potekhin and G. Chabrier

A&A, 645 (2021) A102

Published online: 21 January 2021
Free Access

Improved near optimal angular quadratures for polarised radiative transfer in 3D MHD models

Jaume Jaume Bestard, Jiří Štěpán and Javier Trujillo Bueno

A&A, 645 (2021) A101

Published online: 21 January 2021
Press Release
Open Access

A relation between the radial velocity dispersion of young clusters and their age - Evidence for hardening as the formation scenario of massive close binaries

M. C. Ramírez-Tannus, F. Backs, A. de Koter, H. Sana, H. Beuther, A. Bik, W. Brandner, L. Kaper, H. Linz, Th. Henning and J. Poorta

A&A, 645 (2021) L10

Published online: 20 January 2021
Evolution of the truncated disc and inner hot-flow of GX 339–4

P. Chainakun, W. Luangtip, A. J. Young, P. Thongkonsing and M. Srichok

A&A, 645 (2021) A99

Published online: 20 January 2021
The hot interstellar medium towards 4U 1820-30: a Bayesian analysis

D. Rogantini, E. Costantini, M. Mehdipour, L. Kuiper, P. Ranalli and L. B. F. M. Waters

A&A, 645 (2021) A98

Published online: 20 January 2021
Free Access

SPECULOOS: Ultracool dwarf transit survey - Target list and strategy

D. Sebastian, M. Gillon, E. Ducrot, F. J. Pozuelos, L. J. Garcia, M. N. Günther, L. Delrez, D. Queloz, B. O. Demory, A. H. M. J. Triaud et al. (13 more)

A&A, 645 (2021) A100

Published online: 20 January 2021
Open Access

Starlet ℓ₁-norm for weak lensing cosmology

Virginia Ajani, Jean-Luc Starck and Valeria Pettorino

A&A, 645 (2021) L11

Published online: 19 January 2021
Collisional ionisation, recombination, and ionisation potential in two-fluid slow-mode shocks: Analytical and numerical results

B. Snow and A. Hillier

A&A, 645 (2021) A81

Published online: 19 January 2021

Most downloaded articles

796	Free Access X-rays observations of a super-Chandrasekhar object reveal an ONe and a CO white dwarf merger product embedded in a putative SN Iax remnant Lidia M. Oskinova, Vasilii V. Gvaramadze, Götz Gräfener, Norbert Langer and Helge Todt A&A, 644 (2020) L8 Published online: 14 December 2020
416	Open Access The coherent motion of Cen A dwarf satellite galaxies remains a challenge for ΛCDM cosmology Oliver Müller, Marcel S. Pawlowski, Federico Lelli, Katja Fahrion, Marina Rejkuba, Michael Hilker, Jamie Kanehisa, Noam Libeskind and Helmut Jerjen A&A, 645 (2021) L5 Published online: 08 January 2021
315	Free Access The FORS1 catalogue of stellar magnetic field measurements S. Bagnulo, L. Fossati, J. D. Landstreet and C. Izzo A&A, 583 (2015) A115 Published online: 04 November 2015
263	Press Release Free Access Monitoring the radio emission of Proxima Centauri M. Pérez-Torres, J. F. Gómez, J. L. Ortiz, P. Leto, G. Anglada, J. L. Gómez, E. Rodríguez, C. Trigilio, P. J. Amado, A. Alberdi et al. (8 more) A&A, 645 (2021) A77 Published online: 14 January 2021
223	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

Volume 645 (January 2021)(open volume)
1. Plasma flow velocity and magnetic field in vortices (Yadav, N., et al., 2021, A&A, 645, A3)
2. Herschel view of the star-forming regions in Perseus (Pezzuto, S., et al., 2021, A&A, 645, A55)
3. Sky distribution of >7 million main sequence halo stars (Koppelman, H. H., & Helmi, A., 2021, A&A, 645, A69)
See the table of contents
Volume 644 (December 2020)
1. Molecular-cloud origin from atomic-shell compression (Bracco, A., et al., 644, A5)
2. Dust trail from asteroid disruption in Earth atmosphere (Borovička, J., et al., 644, A58)
3. T Tauri observed by SPHERE-IRDIS at 2110 nm (Kasper, M., et al., 644, A114)
4. Hot solar coronal loops: How do they originate? (Chitta, L. P., et al., 644, A130)
See the table of contents
Volume 643 (November 2020)
1. Collage of redshift z ∼ 5 galaxies imaged by the ALPINE survey in the [CII] 158 μm line with ALMA (Le Fèvre, O., et al., 643, A1)
2. Stellar properties of the retrograde and prograde Milky Way disc (Kordopatis, G., et al., 643, A69)
3. NGC 1316 and the Villarica volcano – dusty outflows (Richtler, T., et al., 643, A120)
4. Changing radio beam pattern of pulsar B in the Double Pulsar (Noutsos, A., et al., 643, A143)
See the table of contents

3698	Free Access X-rays observations of a super-Chandrasekhar object reveal an ONe and a CO white dwarf merger product embedded in a putative SN Iax remnant Lidia M. Oskinova, Vasilii V. Gvaramadze, Götz Gräfener, Norbert Langer and Helge Todt A&A, 644 (2020) L8 Published online: 14 December 2020
1951	Free Access The FORS1 catalogue of stellar magnetic field measurements S. Bagnulo, L. Fossati, J. D. Landstreet and C. Izzo A&A, 583 (2015) A115 Published online: 04 November 2015
1198	Highlight Free Access Parsec-scale properties of the radio brightest jetted AGN at z > 6 C. Spingola, D. Dallacasa, S. Belladitta, A. Caccianiga, M. Giroletti, A. Moretti and M. Orienti A&A, 643 (2020) L12 Published online: 11 November 2020
1153	Press Release Free Access Probing cosmic isotropy with a new X-ray galaxy cluster sample through the L_X–T scaling relation K. Migkas, G. Schellenberger, T. H. Reiprich, F. Pacaud, M. E. Ramos-Ceja and L. Lovisari A&A, 636 (2020) A15 Published online: 08 April 2020
1038	Free Access The Kepler characterization of the variability among A- and F-type stars - I. General overview K. Uytterhoeven, A. Moya, A. Grigahcène, J. A. Guzik, J. Gutiérrez-Soto, B. Smalley, G. Handler, L. A. Balona, E. Niemczura, L. Fox Machado et al. (31 more) A&A, 534 (2011) A125 Published online: 19 October 2011

3845	Free Access X-rays observations of a super-Chandrasekhar object reveal an ONe and a CO white dwarf merger product embedded in a putative SN Iax remnant Lidia M. Oskinova, Vasilii V. Gvaramadze, Götz Gräfener, Norbert Langer and Helge Todt A&A, 644 (2020) L8 Published online: 14 December 2020
3455	Open Access Low-cost precursor of an interstellar mission René Heller, Guillem Anglada-Escudé, Michael Hippke and Pierre Kervella A&A, 641 (2020) A45 Published online: 09 September 2020
3082	Free Access RefleX: X-ray absorption and reflection in active galactic nuclei for arbitrary geometries S. Paltani and C. Ricci A&A, 607 (2017) A31 Published online: 01 November 2017
2616	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
2484	Free Access The FORS1 catalogue of stellar magnetic field measurements S. Bagnulo, L. Fossati, J. D. Landstreet and C. Izzo A&A, 583 (2015) A115 Published online: 04 November 2015

Latest highlightsAll

Latest volumeAll

PUBLISH WITH A&A

Latest highlightsAll

Latest volumeAll

PUBLISH WITH A&A

Latest special issuesAll

Most downloaded articles

Volume 645 (January 2021)(open volume)

News