News type: Research news

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    Low Mg/Si Planetary Host Stars and Their Mg-depleted Terrestrial Planets.
    Simulations have shown that a diverse range of extrasolar terrestrial planet bulk compositions are likely to exist based on the observed variations in host star...
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    Low-frequency gravity waves in blue supergiants
    Almost all massive stars explode as supernovae and form a black hole or neutron star. The remnant mass and the impact of the chemical yield on subsequent star...
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    M 2-9: a space lighthouse.
    The Butterfly Nebula (Minkowski 2-9) is an outstanding example of a highly collimated outflow from an evolved star. The formation of these extreme nebular...
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    M43, the little sister of the Orion Nebula.
    We have selected the Galactic HII region M43, a close-by apparently spherical nebula ionized by a single star (HD37061, B0.5V) to investigate several topics of...
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    Magnetic bright points in the quiet Sun.
    We present a visual determination of the number of bright points (BPs) existing in the quiet Sun, which are structures thought to trace intense kG magnetic...
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    Magnetic fields and the outer rotation curve of M31.
    Recent observations of the rotation curve of M31 show a rise of the outer part that cannot be understood in terms of standard dark matter models or...
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    Mapping solar magnetic fields from the photosphere to the corona
    The solar chromosphere is the region between the relatively thin and cold photosphere (temperature of a few thousand degrees) and the hot and extended corona...
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    Mapping the hidden magnetic field of the quiet Sun
    The Sun is the only star where we can resolve the intricate magnetism that all convective stars harbor. Yet, more than 99% of its visible surface along the...
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    Mapping the Magnetic Field in the Chromosphere of Solar Active Regions
    The magnetic field in the solar chromosphere plays a key role in the heating of the outer solar atmosphere and in the build-up and sudden release of energy in...