Astrophysical: Starspots

  • Publication
    Multisite spectroscopic seismic study of the β Cep star V2052 Ophiuchi: inhibition of mixing by its magnetic field
    We used extensive ground-based multisite and archival spectroscopy to derive observational constraints for a seismic modelling of the magnetic β Cep star V2052...
  • Publication
    Observing the changing surface structures of the active K giant σ Geminorum with SONG
    Aims: We aim to study the spot evolution and differential rotation in the magnetically active cool K-type giant star σ Gem from broadband photometry and...
  • Publication
    On the relation between active-region lifetimes and the autocorrelation function of light curves
    Rotational modulation of stellar light curves due to dark spots encloses information on spot properties and, thus, on magnetic activity. In particular, the...
  • Publication
    Properties of starspots on CoRoT-2
    Context. As a planet eclipses its parent star, a dark spot on the surface of the star may be occulted, causing a detectable variation in the light curve. Aims...
  • Publication
    PyTranSpot: A tool for multiband light curve modeling of planetary transits and stellar spots
    Several studies have shown that stellar activity features, such as occulted and non-occulted starspots, can affect the measurement of transit parameters biasing...
  • Publication
    Roche tomography of cataclysmic variables - VI. Differential rotation of AE Aqr - not tidally locked!
    We present Roche tomograms of the K4V secondary star in the cataclysmic variable AE Aqr, reconstructed from two data sets taken 9 d apart, and measure the...
  • Publication
    Roche tomography of cataclysmic variables - VII. The long-term magnetic activity of AE Aqr
    We present a long-term study of the secondary star in the cataclysmic variable AE Aqr, using Roche tomography to indirectly image starspots on the stellar...
  • Publication
    ROOSTER: a machine-learning analysis tool for Kepler stellar rotation periods
    In order to understand stellar evolution, it is crucial to efficiently determine stellar surface rotation periods. Indeed, while they are of great importance in...
  • Publication
    Rotation of Solar Analogs Crossmatching Kepler and Gaia DR2
    A major obstacle to interpreting the rotation period distribution for main-sequence stars from Kepler mission data has been the lack of a precise evolutionary...