Astrofísicas: Oscilaciones estelares

  • Publicación
    Search for rapid oscillations in the Northern AP stars HD62140, HD81009 and HD22374
    High-speed photometric observations were performed of the Ap stars HD62140 (49 Cam), HD81009, and HD22374 for more than 60 hr in Oct. and Dec. 1986. Photometric...
  • Charla
    Sounding the treasure trove - Asteroseismology of red-giant stars and binaries systems
    Understanding stellar structure and evolution significantly impacts our understanding of the tight-knit evolution of galaxies and exoplanet systems. However...
  • Publicación
    Stellar disharmony
    Frequency differences between high-order p-modes of two stellar models, both with the mass and luminosity of the sun, are compared with results of asymptotic...
  • Charla
    Stellar seismology of gamma Dor pulsators in times of the CoRoT and Kepler satellite missions.
    Gamma Dor stars (M = 1.2-2.5 M⊙; spectral type A-F) are very interesting from an asteroseismic point of view. They show gravity modes, which are the only modes...
  • Publicación
    The Evolution of Rotation and Magnetic Activity in 94 Aqr Aa from Asteroseismology with TESS
    Most previous efforts to calibrate how rotation and magnetic activity depend on stellar age and mass have relied on observations of clusters, where isochrones...
  • Publicación
    The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. I. Survey Overview and First Results for Andromeda I
    An optical monitoring survey in nearby dwarf galaxies was carried out with the 2.5 m Isaac Newton Telescope. Fifty-five dwarf galaxies and four isolated...
  • Charla
    The Kepler space mission sheds a new light on variable A- and F-type stars
    The Kepler spacecraft is providing photometric time series with micromagnitude precision for thousands of variable stars. The continuous time-series of...
  • Publicación
    The phase function for stellar acoustic oscillations. I - Theory
    The influence of the upper layers of a star on p-mode frequencies can be described asymptotically by means of a phase function, which depends essentially only...
  • Publicación
    The phase function for stellar acoustic oscillations. II - Effects of filtering
    Frequencies of solar acoustic oscillations can be analyzed asymptotically in terms of a function determined by the sound speed in the bulk of the sun and a...