Journal: Astronomy and Astrophysics

  • Publication
    The RoPES project with HARPS and HARPS-N: II. A third planet in the multi-planet system HD 176986
    Context. Earth-like planets orbiting in the habitable zone of K- to G-type stars create an RV effect in amplitude of less than 1 ms −1 and have orbital periods...
  • 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...
  • Publication
    The rotational broadening of V395 Carinae. Implications on the compact object's mass
    Context: The masses previously obtained for the X-ray binary 2S 0921-630 inferred a compact object that was either a high-mass neutron star or low-mass black...
  • Publication
    The Sagittarius dwarf irregular galaxy (SagDIG): distance and star formation history
    The distance, star formation history and global properties of the Local Group dIrr galaxy SagDIG are derived based on an [I-(V-I)] colour-magnitude diagram of ~...