Astrophysical: Starspots

  • Publication
    The CARMENES search for exoplanets around M dwarfs. Convective shift and starspot constraints from chromatic radial velocities
    Context. Variability caused by stellar activity represents a challenge to the discovery and characterization of terrestrial exoplanets and complicates the...
  • Publication
    The CoRoT-7 planetary system: two orbiting super-Earths
    We report on an intensive observational campaign carried out with HARPS at the 3.6 m telescope at La Silla on the star CoRoT-7. Additional simultaneous...
  • Publication
    The curious case of 2MASS J15594729+4403595, an ultra-fast M2 dwarf with possible Rieger cycles
    Context. RACE-OC (Rotation and ACtivity Evolution in Open Clusters) is a project aimed at characterising the rotational and magnetic activity properties of the...
  • Publication
    The first evidence for multiple pulsation axes: a new rapidly oscillating Ap star in the Kepler field, KIC 10195926
    We have discovered a new rapidly oscillating Ap (roAp) star among the Kepler mission target stars, KIC 10195926. This star shows two pulsation modes with...
  • Publication
    The GAPS programme at TNG. LII. Spot modelling of V1298 Tau using the SpotCCF tool
    Context. The intrinsic variability due to the magnetic activity of young active stars is one of the main challenges in detecting and characterising exoplanets...
  • Publication
    The GAPS Programme with HARPS-N at TNG. XVII. Line profile indicators and kernel regression as diagnostics of radial-velocity variations due to stellar activity in solar-like stars
    Aims: Stellar activity is the ultimate source of radial-velocity (hereinafter RV) noise in the search for Earth-mass planets orbiting late-type main-sequence...
  • Publication
    Time Variation of Kepler Transits Induced By Stellar Rotating Spots—a Way to Distinguish between Prograde and Retrograde Motion. I. Theory
    Some transiting planets discovered by the Kepler mission display transit timing variations (TTVs) induced by stellar spots that rotate on the visible hemisphere...
  • Publication
    TOI-3884 b: A rare 6-R<SUB>E</SUB> planet that transits a low-mass star with a giant and likely polar spot
    The Transiting Exoplanet Survey Satellite mission identified a deep and asymmetric transit-like signal with a periodicity of 4.5 days orbiting the M4 dwarf star...
  • Publication
    TraMoS project - III. Improved physical parameters, timing analysis and starspot modelling of the WASP-4b exoplanet system from 38 transit observations
    We report 12 new transit observations of the exoplanet WASP-4b from the Transit Monitoring in the South (TraMoS) project. These transits are combined with all...