Journal: Astronomy and Astrophysics

  • Publication
    The Pristine survey: XXVIII. Journey to the Galactic outskirts: Mapping the outer halo red giant stars down to the very metal-poor end
    Context. The outer Galactic halo remains relatively unexplored, particularly regarding its metallicity distribution, merger debris, and the population of very...
  • Publication
    The properties of the obscuring material of a sample of active galactic nuclei from mid-IR and X-ray simultaneous fitting
    Context. Over ten mid-infrared (mid-IR) and X-ray models are currently attempting to describe the nuclear obscuring material of active galactic nuclei (AGNs)...
  • 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 puzzle of isolated and quenched dwarf galaxies in cosmic voids
    We report, for the first time, the detection of a sample of quenched and isolated dwarf galaxies (with 8.9 < log(M ⋆/M ⊙) < 9.5) in the least dense regions of...
  • 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...
  • Publication
    The radial scale length of the Milky Way
    The radial scale length of the exponential component of the disc of the Milky Way has been determined in the near infrared. We have used the TMGS (Two Micron...