Journal: Astronomy and Astrophysics

  • Publication
    Five fake ultra-luminous X-ray sources
    Context. The nature of ultra-luminous X-ray (ULX) sources is still a matter of debate. Studies of their counterparts in other spectral ranges will help to...
  • Publication
    Five new eclipsing binaries with low-mass companions
    Precise space-based photometry from the Transiting Exoplanet Survey Satellite results in a huge number of exoplanetary candidates. However, the masses of these...
  • Publication
    Flare activity and photospheric analysis of Proxima Centauri
    Context. We present the analysis of emission lines in high-resolution optical spectra of the planet-host star Proxima Centauri (Proxima) classified as a M5.5V...
  • Publication
    Flare in the Galactic stellar outer disc detected in SDSS-SEGUE data
    Aims: We explore the outer Galactic disc up to a Galactocentric distance of ≈30 kpc to derive its parameters and measure the magnitude of its flare. Methods: We...
  • Publication
    FliPer: A global measure of power density to estimate surface gravities of main-sequence solar-like stars and red giants
    Asteroseismology provides global stellar parameters such as masses, radii, or surface gravities using mean global seismic parameters and effective temperature...
  • Publication
    FliPerClass: In search of solar-like pulsators among TESS targets
    The NASA Transiting Exoplanet Survey Satellite (TESS) is about to provide full-frame images of almost the entire sky. The amount of stellar data to be analysed...
  • Publication
    Fluctuations of K-band galaxy counts
    We measure the variance in the distribution of off-plane (|b|>20o ) galaxies with m_K
  • Publication
    Fluorescence of [Fe II] in H II regions
    A study of [Fe Ii] lines at various positions within the H Ii regions M42 and M43 is presented. The relative intensities of selected optical [Fe Ii] lines are...
  • Publication
    Fluorine abundances in dwarf stars of the solar neighbourhood
    Context. In spite of many observational efforts to characterize the chemical evolution of our Galaxy, not much is known about the origin of fluorine (F). Models...