The large amount of mass and angular momentum carried by disc winds makes them key processes to understand accretion onto compact objects, such as black holes...
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NewsThe changing-look optical wind of the flaring X-ray transient Swift J1858.6-0814
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NewsThe early sequence of events that shaped the Milky Way
Among the myriad discoveries presented in the second data release of the Gaia mission, there was an enigmatic color-magnitude diagram (CMD) of Milky Way halo...
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NewsThe extreme CNO-enhanced composition of a primitive iron-poor dwarf star
We present an analysis of high-resolution Keck/HIRES spectroscopic observations of J0815+4729, an extremely carbon-enhanced, iron-poor dwarf star. These high...
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NewsThe impact of deep learning for the analysis of galaxy surveys
The amount and complexity of data delivered by modern galaxy surveys has been steadily increasing over the past years. New facilities will soon provide imaging...
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NewsThe impact of strong recombination on temperature determination in planetary nebulae
The long-standing difference in chemical abundances determined from optical recombination lines and collisionally excited lines raises questions about our...
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NewsThe JWST view of the barred galaxy population in the SMACS0723 galaxy cluster
The cosmic evolution of the barred galaxy population provides key information about the secular evolution of galaxies and the settling of rotationally dominated...
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NewsThe nature of an extreme B supergiant in Cygnus
2MASS J20395358+4222505 is an obscured early B supergiant near the massive OB star association Cyg OB2. Despite its bright infrared magnitude (Ks= 5.82) it has...
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NewsThe phosphorus that came from the stars
All chemical elements in the Universe (except for H and most of the He) have been made in stellar interiors. But among those elements, the ones that allowed to...
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NewsThe relic galaxy NGC 1277 lacks dark matter
The standard cosmological model states that massive galaxies contain a large fraction of dark matter. Dark matter is a transparent substance that does not...