Astrofísicas: Actividad estelar

  • Publicación
    Lithium abundances and Li-7/Li-6 ratios in late-type population I field dwarfs
    Using the Coudé Echelle Spectrograph fed by the 1.4 m Coudé Auxiliary Telescope at ESO, La Silla, the authors have obtained a sequence of fourteen high...
  • Publicación
    Long-term starspot activity on BH Virginis.
    The authors parameterize the photometric distortion waves in the short-period RS CVn system BH Vir by a dark, circular spot model for the active regions on the...
  • Publicación
    Magnetic and Rotational Evolution of ρ CrB from Asteroseismology with TESS
    During the first half of main-sequence lifetimes, the evolution of rotation and magnetic activity in solar-type stars appears to be strongly coupled. Recent...
  • Publicación
    Magnetic Fields in a Sample of Planet-hosting M Dwarf Stars from Kepler, K2, and TESS Observed by APOGEE
    Stellar magnetic fields have a major impact on space weather around exoplanets orbiting low-mass stars. From an analysis of Zeeman-broadened Fe I lines measured...
  • Publicación
    Magnetic Fields in M-dwarf Members of the Pleiades Open Cluster Using APOGEE Spectra
    Average magnetic field measurements are presented for 62 M-dwarf members of the Pleiades open cluster, derived from Zeeman-enhanced Fe I lines in the H band. A...
  • Publicación
    Mapping magnetic activity indicators across the M dwarf domain
    Stellar activity poses one of the main obstacles for the detection and characterisation of exoplanets around cool stars, as it can induce radial velocity (RV)...
  • Publicación
    Mapping stellar activity indicators across the M dwarf domain
    Despite stellar magnetic activity being present in most cool stars, its effects on spectroscopic observations are still not well understood. Several activity...
  • Charla
    Mapping the Sun's upper photosphere with artificial neural networks
    In this talk I'll present results from a recent paper in which we have developed a new analysis technique for solar spectra based on artificial neural networks...
  • Publicación
    Modeling the Chromosphere and Transition Region of Planet-hosting Star GJ 436
    Ahead of upcoming space missions intending to conduct observations of low-mass stars in the ultraviolet (UV) spectral region it becomes imperative to...