Publication type: Refereed

  • 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 pulsational behaviour of the rapidly oscillating Ap star HD 122970 during two photometric multisite campaigns
    We undertook two time-series photometric multisite campaigns for the rapidly oscillating Ap star HD 122970. The first one, conducted in 1998, resulted in 119h...
  • Publication
    The pulsations of PG 1351+489
    PG 1351+489 is one of the 20 DBVs - pulsating helium-atmosphere white dwarf stars - known and has the simplest power spectrum for this class of star, making it...
  • 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 puzzling interpretation of NIR indices: The case of NaI2.21
    We present a detailed study of the Na I line strength index centred in the K band at 22 100 Å (NaI2.21 hereafter) relying on different samples of early-type...
  • Publication
    The Puzzling Li-Rich Red Giant Associated With Ngc 6819
    A Li-rich red giant (RG) star (2M19411367+4003382) recently discovered in the direction of NGC 6819 belongs to the rare subset of Li-rich stars that have not...
  • Publication
    The puzzling merging cluster Abell 1914: new insights from the kinematics of member galaxies
    We analyse the dynamical state of Abell 1914, a merging cluster hosting a radio halo, quite unusual for its structure. Our study considers spectroscopic data...
  • Publication
    The puzzling orbital period evolution of the LMXB AX J1745.6-2901
    The orbital period evolution of X-ray binaries provides fundamental clues to understanding mechanisms of angular momentum transfer and loss in these systems. We...
  • Publication
    The Puzzling White Dwarf Cooling Sequence in NGC 6791: A Simple Solution
    In this Letter we demonstrate that the puzzling bright peak in the luminosity function of the white dwarf (WD) cooling sequence of NGC 6791 can be naturally...