Astronomy & Astrophysics

Volume 646 (February 2021)


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The Solar Orbiter mission

Letters to the Editor

Astrophysical processes

Cosmology (including clusters of galaxies)

Extragalactic astronomy

Galaxies within galaxies in the TIMER survey: stellar populations of inner bars are scaled replicas of main bars A42

Published online: 04 February 2021
DOI: https://doi.org/10.1051/0004-6361/202039505
Open Access

A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) - IX. The effects of ram pressure stripping down to the scale of individual HII regions in the dwarf galaxy IC 3476 A139

Published online: 19 February 2021
DOI: https://doi.org/10.1051/0004-6361/202039046

Galactic structure, stellar clusters and populations

Interstellar and circumstellar matter

Stellar structure and evolution

Stellar atmospheres

The Sun and the Heliosphere

Planets and planetary systems

Celestial mechanics and astrometry

Atomic, molecular, and nuclear data

Astronomical instrumentation

Free Access

Fundamental physics with ESPRESSO: Towards an accurate wavelength calibration for a precision test of the fine-structure constant A144

Published online: 19 February 2021
DOI: https://doi.org/10.1051/0004-6361/202039345

Catalogs and data

Free Access

Lucky spectroscopy, an equivalent technique to lucky imaging - II. Spatially resolved intermediate-resolution blue-violet spectroscopy of 19 close massive binaries using the William Herschel Telescope A11

Published online: 29 January 2021
DOI: https://doi.org/10.1051/0004-6361/202039479
Free Access

Stellar chromospheric activity of 1674 FGK stars from the AMBRE-HARPS sample - I. A catalogue of homogeneous chromospheric activity A77

Published online: 10 February 2021
DOI: https://doi.org/10.1051/0004-6361/202039765

Numerical methods and codes