Journal: Astronomy and Astrophysics

  • Publication
    The pre-main sequence spectroscopic binary UZ Tau East: Improved orbital parameters and accretion phase dependence
    We present radial-velocity measurements obtained using high- and intermediate-resolution spectroscopic observations of the classical T Tauri star UZ Tau East...
  • Publication
    The principle of maximum entropy explains the cores observed in the mass distribution of dwarf galaxies
    Cold dark matter (CDM) simulations predict a central cusp in the mass distribution of galaxies. This prediction is in stark contrast with observations of dwarf...
  • Publication
    The Pristine Inner Galaxy Survey (PIGS): IX. The largest detailed chemical analysis of very metal-poor stars in the Sagittarius dwarf galaxy
    The most metal-poor stars provide valuable insights into the early chemical enrichment history of a system, carrying the chemical imprints of the first...
  • Publication
    The pristine nature of SMSS 1605−1443 revealed by ESPRESSO
    Context. SMSS J160540.18−144323.1 is the carbon-enhanced metal-poor (CEMP) star with the lowest iron abundance ever measured, [Fe/H] = −6.2, which was first...
  • Publication
    The pulsation modes of the pre-white dwarf PG 1159-035
    Context: PG 1159-035, a pre-white dwarf with Teff≃ 140 000 K, is the prototype of both two classes: the PG 1159 spectroscopic class and the DOV pulsating class...
  • Publication
    The puzzling case of the accreting millisecond X-ray pulsar IGR J00291+5934: flaring optical emission during quiescence
    We present an optical (gri) study during quiescence of the accreting millisecond X-ray pulsar IGR J00291+5934 performed with the 10.4 m Gran Telescopio Canarias...
  • Publication
    The quasi-biennial periodicity (QBP) in velocity and intensity helioseismic observations. The seismic QBP over solar cycle 23
    Aims: We looked for signatures of quasi-biennial periodicity (QBP) over different phases of solar cycle by means of acoustic modes of oscillation. Low-degree p...
  • Publication
    The quiet Sun magnetic field observed with ZIMPOL on THEMIS. I. The probability density function
    Context: The quiet Sun magnetic field probability density function (PDF) remains poorly known. Modeling this field also introduces a magnetic filling factor...
  • Publication
    The radial distribution of the two stellar populations in NGC 1851
    We have analyzed ACS/WFC and WFPC2 images from HST, as well as ground-based data to study the radial distribution of the double sub-giant branch (SGB) recently...