Journal: Astronomy and Astrophysics

  • Publication
    An uncombed inversion of multiwavelength observations reproducing the net circular polarization in a sunspot's penumbra
    Context. The penumbra of sunspots has a complex magnetic field topology whose three-dimensional organization remains unclear after more than a century of...
  • Publication
    An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242
    Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature...
  • Publication
    An unusual iron Lo-BAL quasar detected by ISOCAM
    We report the discovery of an unusual low-ionization broad absorption line quasar at z=1.776 which exhibits absorption lines from many excited states of Fe II...
  • Publication
    An unusually low-density super-Earth transiting the bright early-type M-dwarf GJ 1018 (TOI-244)
    Context. Small planets located at the lower mode of the bimodal radius distribution are generally assumed to be composed of iron and silicates in a proportion...
  • Publication
    An updated MILES stellar library and stellar population models
    Aims: We present a number of improvements to the MILES library and stellar population models. We correct some small errors in the radial velocities of the stars...
  • Publication
    An updated stellar census of the Quintuplet cluster
    Context. Found within the central molecular zone, the Quintuplet is one of the most massive young clusters in the Galaxy. As a consequence it offers the...
  • Publication
    An X-ray study of the open clusters NGC 2451 A and B
    We have conducted a detailed study of the object NGC 2451, which actually consists of two different open clusters A and B along the same line of sight at 206 pc...
  • Publication
    An X-ray view of 82 LINERs with Chandra and XMM-Newton data
    We present the results of a homogeneous X-ray analysis for 82 nearby low-ionisation, narrow emission-line regions (LINERs) selected from the catalogue of...
  • Publication
    Analysing the structure of the bulge with Mira variables
    Context. The Galactic bulge at latitude 4 < |b|(deg) < 10 was claimed to show an X-shape, which means that stellar density distributions along the line of sight...