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Astronomy & Astrophysics

Volume 648 (April 2021)


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Letters to the Editor

Astronomical instrumentation

The LOFAR Two Meter Sky Survey
Press Release
Open Access

The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1 - I. Direction-dependent calibration and imaging A1

DOI: https://doi.org/10.1051/0004-6361/202038804

Catalogs and data

The LOFAR Two Meter Sky Survey
Free Access

The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1 - II. The ELAIS-N1 LOFAR deep field A2

DOI: https://doi.org/10.1051/0004-6361/202038828
The LOFAR Two Meter Sky Survey
Free Access

The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1 - III. Host-galaxy identifications and value added catalogues A3

DOI: https://doi.org/10.1051/0004-6361/202038813
The LOFAR Two Meter Sky Survey
Free Access

The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1 - IV. Photometric redshifts and stellar masses A4

DOI: https://doi.org/10.1051/0004-6361/202038809

Extragalactic astronomy

The LOFAR Two Meter Sky Survey
Free Access

The LOFAR Two-metre Sky Survey Deep Fields - The star-formation rate–radio luminosity relation at low frequencies A6

DOI: https://doi.org/10.1051/0004-6361/202039343
The LOFAR Two Meter Sky Survey
Free Access

The best of both worlds: Combining LOFAR and Apertif to derive resolved radio spectral index images A9

DOI: https://doi.org/10.1051/0004-6361/202039102

Cosmology (including clusters of galaxies)


Catalogs and data


Stellar atmospheres


Extragalactic astronomy


Planets and planetary systems


Stellar atmospheres


Extragalactic astronomy


Galactic structure, stellar clusters and populations


Interstellar and circumstellar matter


Planets and planetary systems

Free Access

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

The Sun and the Heliosphere


Extragalactic astronomy


Interstellar and circumstellar matter


Extragalactic astronomy


Astronomical instrumentation


Extragalactic astronomy


The Sun and the Heliosphere


Numerical methods and codes


Interstellar and circumstellar matter


Extragalactic astronomy


Planets and planetary systems


Galactic structure, stellar clusters and populations


The Sun and the Heliosphere


Stellar atmospheres


Stellar structure and evolution


Interstellar and circumstellar matter


Stellar structure and evolution


Interstellar and circumstellar matter


Extragalactic astronomy


The Sun and the Heliosphere


Catalogs and data


Interstellar and circumstellar matter


Celestial mechanics and astrometry


Extragalactic astronomy


Astronomical instrumentation


Planets and planetary systems


Numerical methods and codes


The Sun and the Heliosphere


Astrophysical processes


The Sun and the Heliosphere


Stellar atmospheres


Planets and planetary systems


Interstellar and circumstellar matter


Planets and planetary systems


Cosmology (including clusters of galaxies)


Atomic, molecular, and nuclear data


Interstellar and circumstellar matter


Cosmology (including clusters of galaxies)


Extragalactic astronomy


Galactic structure, stellar clusters and populations

Free Access

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


Atomic, molecular, and nuclear data


Planets and planetary systems


Galactic structure, stellar clusters and populations


Planets and planetary systems

Free Access

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

Interstellar and circumstellar matter


Planets and planetary systems

Press Release
Free Access

Discovery of a directly imaged planet to the young solar analog YSES 2 A73

DOI: https://doi.org/10.1051/0004-6361/202140508

Cosmology (including clusters of galaxies)


Planets and planetary systems

Free Access

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

Interstellar and circumstellar matter


The Sun and the Heliosphere


Galactic structure, stellar clusters and populations


Stellar atmospheres


Planets and planetary systems


Astrophysical processes


Extragalactic astronomy


Interstellar and circumstellar matter


Atomic, molecular, and nuclear data


Planets and planetary systems


Extragalactic astronomy


Interstellar and circumstellar matter


Planets and planetary systems


Celestial mechanics and astrometry


Interstellar and circumstellar matter


Stellar structure and evolution


Interstellar and circumstellar matter


Stellar atmospheres


Stellar structure and evolution


Planets and planetary systems


Stellar structure and evolution


Cosmology (including clusters of galaxies)

Free Access

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


Planets and planetary systems


Extragalactic astronomy

Free Access

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

Catalogs and data


Astrophysical processes


The Sun and the Heliosphere


Stellar structure and evolution


Galactic structure, stellar clusters and populations


Stellar structure and evolution


Planets and planetary systems


Stellar structure and evolution


Planets and planetary systems


Stellar structure and evolution


Interstellar and circumstellar matter


Cosmology (including clusters of galaxies)


Extragalactic astronomy

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

Interstellar and circumstellar matter


Stellar structure and evolution


Interstellar and circumstellar matter


Numerical methods and codes


Cosmology (including clusters of galaxies)


Galactic structure, stellar clusters and populations


Celestial mechanics and astrometry


Stellar structure and evolution


Planets and planetary systems

Free Access

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

Extragalactic astronomy


Astrophysical processes