Journal: Astronomy and Astrophysics

  • 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...
  • Publication
    The rotation-metallicity relation for the Galactic disk as measured in the Gaia DR1 TGAS and APOGEE data
    Aims: Previous studies have found that the Galactic rotation velocity-metallicity (V-[Fe/H]) relations for the thin and thick disk populations show negative and...
  • Publication
    The rotation-metallicity relation for the Galactic disk as measured in the Gaia DR1 TGAS and APOGEE data
    Aims: Previous studies have found that the Galactic rotation velocity-metallicity (V-[Fe/H]) relations for the thin and thick disk populations show negative and...