Journal: Astronomy and Astrophysics

  • Publication
    The role of active galactic nucleus feedback on the evolution of dwarf galaxies from cosmological simulations: Supermassive black holes suppress star formation in low-mass galaxies
    Aims. Recent observational studies suggest that feedback from active galactic nuclei (AGNs) may play an important role in the formation and evolution of dwarf...
  • Publication
    The role of grain size in active galactic nuclei torus dust models
    Context. Active galactic nuclei (AGN) are surrounded by dust within the central parsecs. The dusty circumnuclear structures, referred to as the torus, are...
  • Publication
    The role of stellar radial motions in shaping galaxy surface brightness profiles
    Aims: The physics driving features such as breaks observed in galaxy surface brightness (SB) profiles remains contentious. Here, we assess the importance of...
  • Publication
    The role of the chromospheric magnetic canopy in the formation of a sunspot penumbra
    Context. While it is conjectured that a chromospheric canopy plays a role in penumbra formation, it has been difficult to find observational evidence of the...
  • Publication
    The RoPES project with HARPS and HARPS-N. I. A system of super-Earths orbiting the moderately active K-dwarf HD 176986
    We report the discovery of a system of two super-Earths orbiting the moderately active K-dwarf HD 176986. This work is part of the RoPES RV program of G- and K...
  • Publication
    The Rossiter-McLaughlin effect revolutions: an ultra-short period planet and a warm mini-Neptune on perpendicular orbits
    Comparisons of the alignment of exoplanets with a common host star and each other can be used to distinguish among concurrent evolution scenarios for the star...
  • Publication
    The rotation rates of massive stars. How slow are the slow ones?
    Context. Rotation plays a key role in the life cycles of stars with masses above ~8 M⊙. Hence, accurate knowledge of the rotation rates of such massive stars is...
  • Publication
    The rotation speed of the companion star in Aquila X-1.
    We have obtained medium resolution spectra of the neutron star X-ray transient Aql X-1 during quiescence. We determine the spectral type of the companion star...
  • Publication
    The rotation speed of the companion star in V395 CAR (=2S0921-630)
    We have obtained high resolution optical spectroscopy of the accretion disc corona source 2S0921-630 (=V395 Car) that constrains the spectral type of the...