Journal: Astronomy and Astrophysics

  • Publication
    Uncertainties in the solar photospheric oxygen abundance
    Aims: The purpose of this work is to better understand the confidence limits of the photospheric solar oxygen abundance derived from three-dimensional models...
  • Publication
    Uncertainty-aware blob detection with an application to integrated-light stellar population recoveries
    Context. Blob detection is a common problem in astronomy. One example is in stellar population modelling, where the distribution of stellar ages and...
  • Publication
    Uncovering the true periods of the young sub-Neptunes orbiting TOI-2076
    Context. TOI-2076 is a transiting three-planet system of sub-Neptunes orbiting a bright (G = 8.9 mag), young (340 ± 80 Myr) K-type star. Although a validated...
  • Publication
    Understanding internetwork magnetic fields as determined from visible and infrared spectral lines
    We present numerical experiments aimed at understanding why near-infrared observations systematically deliver weak magnetic fields in the internetwork, whereas...
  • Publication
    Understanding the evolution and dust formation of carbon stars in the Large Magellanic Cloud via the JWST
    Context. Carbon stars have been, and still are, extensively studied. Given their complex internal structure and their peculiar chemical composition, they are...
  • Publication
    Understanding the thermal and magnetic properties of an X-class flare in the low solar atmosphere
    We analyse the spatial distribution and vertical stratification of the physical parameters of the solar atmosphere when an X-class flare occurs. We made use of...
  • Publication
    Unexplored outflows in nearby low luminosity AGNs. The case of NGC 1052
    Context. Multi-phase outflows play a central role in galaxy evolution shaping the properties of galaxies. Understanding outflows and their effects in low...
  • Publication
    Unidentified quasars among stationary objects from Gaia DR2
    Here we apply a technique selecting quasar candidates purely as sources with zero proper motions in the Gaia data release 2 (DR2). We demonstrate that this...
  • Publication
    Unprecedented study of the broadband emission of Mrk 421 during flaring activity in March 2010
    Context. Because of its proximity, Mrk 421 is one of the best sources on which to study the nature of BL Lac objects. Its proximity allows us to characterize...