Astrophysical: Asteroseismology

  • Publication
    Kepler-91b: a planet at the end of its life. Planet and giant host star properties via light-curve variations
    Context. The evolution of planetary systems is intimately linked to the evolution of their host stars. Our understanding of the whole planetary evolution...
  • Publication
    KIC 4768731: a bright long-period roAp star in the Kepler field
    We report the identification of 61.45 d-1 (711.2 μHz) oscillations, with amplitudes of 62.6 μmag, in KIC 4768731 (HD 225914) using Kepler photometry. This...
  • Publication
    Lithium abundance and rotation of seismic solar analogues. Solar and stellar connection from Kepler and Hermes observations
    Context. Lithium abundance A(Li) and surface rotation are good diagnostic tools to probe the internal mixing and angular momentum transfer in stars. Aims: We...
  • Publication
    Magnetic activity cycles in solar-like stars: The cross-correlation technique of p-mode frequency shifts
    Aims: We set out to study the use of cross-correlation techniques to infer the frequency shifts that are induced by changing magnetic fields in p-mode...
  • Publication
    Magnetic Activity Evolution of Solar-like Stars. I. S <SUB>ph</SUB>-Age Relation Derived from Kepler Observations
    The ages of solar-like stars have been at the center of many studies such as exoplanet characterization or Galactic-archeology. While ages are usually computed...
  • Publication
    Magnetic activity of F stars observed by Kepler
    Context. The study of stellar activity is important because it can provide new constraints for dynamo models when combined with surface rotation rates and the...
  • Publication
    Masses and ages for metal-poor stars. A pilot programme combining asteroseismology and high-resolution spectroscopic follow-up of RAVE halo stars
    Context. Very metal-poor halo stars are the best candidates for being among the oldest objects in our Galaxy. Samples of halo stars with age determination and...
  • Publication
    Multi-campaign asteroseismic analysis of eight solar-like pulsating stars observed by the K2 mission
    The NASA K2 mission that succeeded the nominal Kepler mission observed several hundred thousand stars during its operations. While most of the stars were...
  • Publication
    On the Characterization of GJ 504: A Magnetically Active Planet-host Star Observed by the Transiting Exoplanet Survey Satellite (TESS)
    We present the results of the analysis of the photometric data collected in long- and short-cadence mode by the Transiting Exoplanet Survey Satellite for GJ 504...