News
The 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...
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NewsThe role of active galactic nucleus feedback on the evolution of dwarf galaxies from cosmological simulations: Supermassive black holes suppress star formation in low-mass galaxiesRecent observational studies suggest that feedback from active galactic nuclei (AGNs)—the energetic centres powered by supermassive black holes—may play an...
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NewsThe role of the Sagittarius dwarf galaxy in the evolution of our GalaxyThe European Space Agency's Gaia mission is revolutionising our understanding on how the Milky Way, the spiral galaxy we inhabit, has formed and evolved. Gaia...
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NewsThe rotation rates of massive stars: How slow are the slow ones?Rotation plays a key role in the life cycles of stars with masses above 8 Msun. Hence, accurate knowledge of the rotation rates of such massive stars is...
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NewsThe slow expansion of dark matter halos from cusp to core naturally produces extended stellar core-like distributionsOnly a handful of observations truly constrain the nature of dark matter, which is why dozens of different physical models are still viable. Several of the most...
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NewsThe spectroscopic Hertzsprung-Russell diagram of Galactic massive stars.The distribution of stars in the Hertzsprung-Russell diagram narrates their evolutionary history and directly assesses their properties. Placing stars in this...
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NewsThe Star Formation History of M32.We use deep Hubble Space Telescope Advanced Camera for Surveys/High Resolution Channel observations of a field within M32 (F1) and an M31 background field (F2)...
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NewsThe star formation rate evolution of low-mass galaxies as seen by OTELOWe present the analysis of a sample of Halpha, Hbeta and [OII] emission line galaxies from the OTELO survey, with masses typically below log(M */Msun) = 9.4 and...
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NewsThe stellar initial mass function at 0.9 < z < 1.5.We explore the stellar initial mass function (IMF) of a sample of 49massive quiescent galaxies (MQGs) at 0.9