Journal: Astronomy and Astrophysics

  • Publication
    Seismic differences between solar magnetic cycles 23 and 24 for low-degree modes
    Solar magnetic activity follows regular cycles of about 11 years with an inversion of polarity in the poles every ∼22 years. This changing surface magnetism...
  • Publication
    Seismic probing of the first dredge-up event through the eccentric red-giant and red-giant spectroscopic binary KIC 9163796. How different are red-giant stars with a mass ratio of 1.015?
    Context. Binaries in double-lined spectroscopic systems (SB2) provide a homogeneous set of stars. Differences of parameters, such as age or initial conditions...
  • Publication
    Seismology of delta Scuti stars in the Praesepe cluster. I. Ranges of unstable modes as predicted by linear analysis versus observations
    We consider here a representative set of delta Scuti stars observed in the Praesepe cluster, thanks to recent efforts of multi-site networks. We show that the...
  • Publication
    Seismology of delta Scuti stars in the Praesepe cluster. II. Identification of radial modes and their associated stellar parameters
    An analysis based on a comparison between observations and stellar models has been carried out to identify radial modes of oscillations in several multi...
  • Publication
    Self-supervised component separation for the extragalactic submillimetre sky
    We use a new approach based on self-supervised deep learning networks originally applied to transparency separation in order to simultaneously extract the...
  • Publication
    Sensitivity of helioseismic gravity modes to the dynamics of the solar core
    Context: The dynamics of the solar core cannot be properly constrained through the analysis of acoustic oscillation modes. Gravity modes (g modes) are necessary...
  • Publication
    Sensitivity of the GOLF signal to combined solar velocity and intensity variations
    The GOLF instrument provides a stable and continuous measurement of the intensity of spatially integrated sunlight in one wing of the sodium D lines. Because...
  • Publication
    Separation between RR Lyrae and type II Cepheids and their importance for a distance determination: the case of omega Cen
    The separation between RR Lyrae (RRLs) and type II Cepheid (T2Cs) variables based on their period is debated. Both types of variable stars are distance...
  • Publication
    Seventeen new very low-mass members in Taurus. The brown dwarf deficit revisited
    Recent studies of the substellar population in the Taurus cloud have revealed a deficit of brown dwarfs compared to the Trapezium cluster population. However...