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Astronomy & Astrophysics

Volume 648 (April 2021)


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The LOFAR Two Meter Sky Survey

First science highlights from SRG/eROSITA

Letters to the Editor

Astrophysical processes

Cosmology (including clusters of galaxies)

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Organised randoms: Learning and correcting for systematic galaxy clustering patterns in KiDS using self-organising maps A98

DOI: https://doi.org/10.1051/0004-6361/202040136

Extragalactic astronomy


Interstellar and circumstellar matter


Extragalactic astronomy

Open Access

Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron - IV. The quasar 3C 345 at 18 cm: Magnetic field structure and brightness temperature A82

DOI: https://doi.org/10.1051/0004-6361/202039493
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FR-type radio sources at 3 GHz VLA-COSMOS: Relation to physical properties and large-scale environment A102

DOI: https://doi.org/10.1051/0004-6361/202039488
Open Access

The central parsec of NGC 3783: a rotating broad emission line region, asymmetric hot dust structure, and compact coronal line region A117

DOI: https://doi.org/10.1051/0004-6361/202040061

Galactic structure, stellar clusters and populations

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Mapping the core of the Tarantula Nebula with VLT-MUSE - II. The spectroscopic Hertzsprung-Russell diagram of OB stars in NGC 2070 A65

DOI: https://doi.org/10.1051/0004-6361/202040008

Interstellar and circumstellar matter

Stellar structure and evolution

Stellar atmospheres

The Sun and the Heliosphere

Planets and planetary systems

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A super-Earth on a close-in orbit around the M1V star GJ 740 - A HADES and CARMENES collaboration A20

DOI: https://doi.org/10.1051/0004-6361/202040099
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TESS unveils the optical phase curve of KELT-1b - Thermal emission and ellipsoidal variation from the brown dwarf companion along with the stellar activity A71

DOI: https://doi.org/10.1051/0004-6361/202038524
Press Release
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Discovery of a directly imaged planet to the young solar analog YSES 2 A73

DOI: https://doi.org/10.1051/0004-6361/202140508
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A sub-Neptune and a non-transiting Neptune-mass companion unveiled by ESPRESSO around the bright late-F dwarf HD 5278 (TOI-130) A75

DOI: https://doi.org/10.1051/0004-6361/202040034
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Evidence for disequilibrium chemistry from vertical mixing in hot Jupiter atmospheres - A comprehensive survey of transiting close-in gas giant exoplanets with warm-Spitzer/IRAC A127

DOI: https://doi.org/10.1051/0004-6361/202039708

Celestial mechanics and astrometry

Atomic, molecular, and nuclear data

Astronomical instrumentation

Catalogs and data

Numerical methods and codes