Adaptive optics is a prime example of how progress in observational astronomy can be
driven by technological developments. At many observatories it is now considered to be part …

Understanding the dominant brown dwarf and giant planet formation processes, and finding
out whether these processes rely on completely different mechanisms or share common …

Aims. We produce a clean and well-characterised catalogue of objects within 100 pc of the
Sun from the Gaia Early Data Release 3. We characterise the catalogue through …

High-contrast adaptive optics (AO) imaging is a powerful technique to probe the
architectures of planetary systems from the outside-in and survey the atmospheres of self …

The last decade of direct imaging (DI) searches for sub-stellar companions has uncovered a
widely diverse sample that challenges the current formation models, while highlighting the …

We present the scientific performance results of pynpoint, our Python-based software
package that uses principal component analysis to detect and estimate the flux of …

Context. In recent decades, direct imaging has confirmed the existence of substellar
companions (exoplanets or brown dwarfs) on wide orbits (> 10 au) around their host stars. In …

The past decade has seen a revolution in our understanding of protoplanetary disk evolution
and planet formation in single-star systems. However, the majority of solar-type stars form in …

Context. Large surveys with new-generation high-contrast imaging instruments are needed
to derive the frequency and properties of exoplanet populations with separations from~ 5 to …

ABSTRACT We present new 1–1.25 μm (z and J band) Subaru/IRCS and 2 μm (K band)
VLT/NaCo data for HR 8799 and a re-reduction of the 3–5 μm MMT/Clio data first presented …