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Astronomy & Astrophysics

Volume 637 (May 2020) (open volume)

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Gaia Data Release 2

Letters to the Editor

Astrophysical processes

Cosmology (including clusters of galaxies)

Extragalactic astronomy

Free Access

Liverpool-Maidanak monitoring of the Einstein Cross in 2006–2019 - I. Light curves in the gVrRI optical bands and microlensing signatures A89

Published online: 21 May 2020

Galactic structure, stellar clusters and populations

Interstellar and circumstellar matter

Free Access

Seeds of Life in Space (SOLIS) - VI. Chemical evolution of sulfuretted species along the outflows driven by the low-mass protostellar binary NGC 1333-IRAS4A A63

Published online: 15 May 2020

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

Catalogs and data

Numerical methods and codes