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Astronomy & Astrophysics

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A major international journal that publishes results of worldwide astronomical and astrophysical research.

Editor-in-Chief: T. Forveille
Letters Editor-in-Chief: J. Alves
Managing Editor: C. Bertout

Impact factor: 5.084
altA&A Open Access Policy

ISSN (Print Edition): 0004-6361
ISSN (Electronic Edition): 1432-0746
Frequency: 12 volumes per year
Published by: EDP Sciences

Mirror sites: CDS | EDP Sciences

© The European Southern Observatory (ESO)

Most downloaded articles
Article
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Spectroscopic and photometric evidence of two stellar populations in the Galactic globular cluster NGC 6121 (M 4)

A. F. Marino, S. Villanova, G. Piotto, A. P. Milone, Y. Momany, L. R. Bedin, A. M. Medling
A&A, 490 2 (2008) 625-640
Published online: 2008-08-08
DOI: http://dx.doi.org/10.1051/0004-6361:200810389
Abstract Full HTML PDF (1.254 MB) PS (403.1 KB) References Tables at CDS SIMBAD record
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An analysis of the durations of Swift gamma-ray bursts

Z.-B. Zhang, C.-S. Choi
A&A, 484 2 (2008) 293-297
Published online: 2008-04-08
DOI: http://dx.doi.org/10.1051/0004-6361:20079210
Abstract Full HTML PDF (258.9 KB) PS (105.8 KB) References SIMBAD record
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The thermal emission of the young and massive planet CoRoT-2b at 4.5 and 8 μm

M. Gillon, A. A. Lanotte, T. Barman, N. Miller, B.-O. Demory, M. Deleuil, J. Montalbán, F. Bouchy, A. Collier Cameron, H. J. Deeg et al. (9 more)
A&A, 511 (2010) A3
Published online: 2010-02-19
DOI: http://dx.doi.org/10.1051/0004-6361/200913507
Abstract Full HTML PDF (508.0 KB) PS (448.7 KB) References Tables at CDS SIMBAD record
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Quasi-simultaneous multi-frequency observations of inverted-spectrum GPS candidate sources

B. Vollmer, T. P. Krichbaum, E. Angelakis, Y. Y. Kovalev
A&A, 489 1 (2008) 49-55
Published online: 2008-07-09
DOI: http://dx.doi.org/10.1051/0004-6361:20078857
Abstract Full HTML PDF (2.047 MB) PS (5.514 MB) References Online Material Tables at CDS SIMBAD record
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Towards consistent mapping of distant worlds: secondary-eclipse scanning of the exoplanet HD 189733b

J. de Wit, M. Gillon, B.-O. Demory, S. Seager
A&A, 548 (2012) A128
Published online: 2012-12-04
DOI: http://dx.doi.org/10.1051/0004-6361/201219060
Abstract Full HTML PDF (2.713 MB) References Online Material SIMBAD record
Article
Free access

Spectroscopic and photometric evidence of two stellar populations in the Galactic globular cluster NGC 6121 (M 4)

A. F. Marino, S. Villanova, G. Piotto, A. P. Milone, Y. Momany, L. R. Bedin, A. M. Medling
A&A, 490 2 (2008) 625-640
Published online: 2008-08-08
DOI: http://dx.doi.org/10.1051/0004-6361:200810389
Abstract Full HTML PDF (1.254 MB) PS (403.1 KB) References Tables at CDS SIMBAD record
Free access

Visual binaries among high-mass stars - An adaptive optics survey of OB stars in the NGC 6611 cluster

G. Duchêne, T. Simon, J. Eislöffel, J. Bouvier
A&A, 379 1 (2001) 147-161
DOI: http://dx.doi.org/10.1051/0004-6361:20011305
Abstract Full HTML PDF (386 KB) PS (401 KB) References SIMBAD record
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The evolution of the spectral energy distribution in massive young stellar objects

S. Molinari, S. Pezzuto, R. Cesaroni, J. Brand, F. Faustini, L. Testi
A&A, 481 2 (2008) 345-365
Published online: 2008-01-25
DOI: http://dx.doi.org/10.1051/0004-6361:20078661
Abstract Full HTML PDF (2.402 MB) PS (10.50 MB) References Online Material SIMBAD record
Free access

The thermal emission of the young and massive planet CoRoT-2b at 4.5 and 8 μm

M. Gillon, A. A. Lanotte, T. Barman, N. Miller, B.-O. Demory, M. Deleuil, J. Montalbán, F. Bouchy, A. Collier Cameron, H. J. Deeg et al. (9 more)
A&A, 511 (2010) A3
Published online: 2010-02-19
DOI: http://dx.doi.org/10.1051/0004-6361/200913507
Abstract Full HTML PDF (508.0 KB) PS (448.7 KB) References Tables at CDS SIMBAD record
Free access

Validation of the new Hipparcos reduction

F. van Leeuwen
A&A, 474 2 (2007) 653-664
DOI: http://dx.doi.org/10.1051/0004-6361:20078357
Abstract Full HTML PDF (1.649 MB) PS (251.3 KB) References
Article
Free access

Spectroscopic and photometric evidence of two stellar populations in the Galactic globular cluster NGC 6121 (M 4)

A. F. Marino, S. Villanova, G. Piotto, A. P. Milone, Y. Momany, L. R. Bedin, A. M. Medling
A&A, 490 2 (2008) 625-640
Published online: 2008-08-08
DOI: http://dx.doi.org/10.1051/0004-6361:200810389
Abstract Full HTML PDF (1.254 MB) PS (403.1 KB) References Tables at CDS SIMBAD record
Free access

Validation of the new Hipparcos reduction

F. van Leeuwen
A&A, 474 2 (2007) 653-664
DOI: http://dx.doi.org/10.1051/0004-6361:20078357
Abstract Full HTML PDF (1.649 MB) PS (251.3 KB) References
Free access

Towards consistent mapping of distant worlds: secondary-eclipse scanning of the exoplanet HD 189733b

J. de Wit, M. Gillon, B.-O. Demory, S. Seager
A&A, 548 (2012) A128
Published online: 2012-12-04
DOI: http://dx.doi.org/10.1051/0004-6361/201219060
Abstract Full HTML PDF (2.713 MB) References Online Material SIMBAD record
Free access

Visual binaries among high-mass stars - An adaptive optics survey of OB stars in the NGC 6611 cluster

G. Duchêne, T. Simon, J. Eislöffel, J. Bouvier
A&A, 379 1 (2001) 147-161
DOI: http://dx.doi.org/10.1051/0004-6361:20011305
Abstract Full HTML PDF (386 KB) PS (401 KB) References SIMBAD record
Free access

The evolution of the spectral energy distribution in massive young stellar objects

S. Molinari, S. Pezzuto, R. Cesaroni, J. Brand, F. Faustini, L. Testi
A&A, 481 2 (2008) 345-365
Published online: 2008-01-25
DOI: http://dx.doi.org/10.1051/0004-6361:20078661
Abstract Full HTML PDF (2.402 MB) PS (10.50 MB) References Online Material SIMBAD record
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Cover gallery

Star formation flow field at onset of 2nd collapse

Electric currents below a magnetic null in the solar corona

45 MHz map of the sky for ä < 65° (J2000)

Young stellar cluster candidates in the M33 outskirts

Gas density and pressure around an LBV+O binary

Microlensing of the Einstein Cross lensed quasar

2.18 µm image of the giant exoplanet Β Pictoris b

Numerical simulation of the convection in a cold giant star

The spinning gas and dust disc of a supergiant star

Magnetic spots tracing stellar differential rotation

Revealing the nature of a highly obscured HMXB

X-ray sources in the field of the Andromeda galaxy

Color composite image of the M 42+M 43 region

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Prior to 2001, A&A was published as A&A Main Journal (Springer Verlag, 1969-2000) and A&A Supplement Series (EDP Sciences, 1980-2000).