Astronomy & Astrophysics

Volume 647 (March 2021)


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First science highlights from SRG/eROSITA

Press Release
Free Access

The Abell 3391/95 galaxy cluster system - A 15 Mpc intergalactic medium emission filament, a warm gas bridge, infalling matter clumps, and (re-) accelerated plasma discovered by combining SRG/eROSITA data with ASKAP/EMU and DECam data A2

Published online: 26 February 2021
DOI: https://doi.org/10.1051/0004-6361/202039590

Letters to the Editor

Astrophysical processes

Cosmology (including clusters of galaxies)

Press Release
Free Access

A new measurement of the Hubble constant using Type Ia supernovae calibrated with surface brightness fluctuations A72

Published online: 12 March 2021
DOI: https://doi.org/10.1051/0004-6361/202039196

Extragalactic astronomy

Galactic structure, stellar clusters and populations

Highlight

APOGEE discovery of a chemically atypical star disrupted from NGC 6723 and captured by the Milky Way bulge A64

Published online: 11 March 2021
DOI: https://doi.org/10.1051/0004-6361/202040255

Interstellar and circumstellar matter

Dust polarized emission observations of NGC 6334 - BISTRO reveals the details of the complex but organized magnetic field structure of the high-mass star-forming hub-filament network A78

Published online: 11 March 2021
DOI: https://doi.org/10.1051/0004-6361/202038624

Stellar structure and evolution

Stellar atmospheres

The Sun and the Heliosphere

Planets and planetary systems

A survey of the linear polarization of directly imaged exoplanets and brown dwarf companions with SPHERE-IRDIS - First polarimetric detections revealing disks around DH Tau B and GSC 6214-210 B A21

Published online: 02 March 2021
DOI: https://doi.org/10.1051/0004-6361/202039290

Precise radial velocities of giant stars - XV. Mysterious nearly periodic radial velocity variations in the eccentric binary ε Cygni A160

Published online: 29 March 2021
DOI: https://doi.org/10.1051/0004-6361/202040087

Celestial mechanics and astrometry

Atomic, molecular, and nuclear data

Astronomical instrumentation

Catalogs and data

Free Access

The OTELO survey as a morphological probe. Last ten Gyr of galaxy evolution - The mass–size relation up to z = 2 A89

Published online: 12 March 2021
DOI: https://doi.org/10.1051/0004-6361/202037861

Numerical methods and codes

Open Access

S2D2: Small-scale Significant substructure DBSCAN Detection - I. NESTs detection in 2D star-forming regions A14

Published online: 26 February 2021
DOI: https://doi.org/10.1051/0004-6361/202038123