Astrofísicas: Ambientes estelares

  • Charla
    Magnetic Flux, Heating, & Flaring: Clues from the Sun for Other Stars & Systems
    On the Sun, the presence of magnetic flux at the photosphere is closely linked to (1) steady heating of the overlying atmosphere and (2) transient brightenings...
  • Noticia
    MATS CARLSSON: “En Astrofísica, no podemos realizar experimentos y solo podemos extraer información que porta la luz”
    Mats Carlsson, catedrático del Instituto de Astrofísica Teórica de la Universidad de Oslo (Noruega) y director del centro de excelencia "Rosseland Center for...
  • Publicación
    Measurements of the near-infrared stellar scintillation above the Observatorio del Teide (Tenerife)
    The normalized variance and power spectrum of the atmospheric scintillation has been measured above the Observatorio de Teide (Canary Islands), at 2400-m...
  • Publicación
    Modeling of 3d Atmospheres of Cool Stars with the Mancha Code
    The first results of the application of the MANCHA code to the case of stars beyond the solar case are presented: hydrodynamical simulations of stars of...
  • 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...
  • Publicación
    Multidimensional radiative transfer in stratified atmospheres
    Energy transport by radiation is an important contribution to the energy budget in stellar atmospheric structures. In this paper, radiative relaxation of small...
  • Publicación
    Multidimensional radiative transfer in stratified atmospheres. IV - Radiative cooling by LTE and non-LTE spectral lines
    The question of efficiency of radiative energy losses in spectral lines is addressed. In a semi-infinite atmosphere with constant temperature, the total...
  • Publicación
    Multidimensional radiative transfer in stratified atmospheres. VI - Radiative instabilities
    The possibility that radiative instabilities in stellar atmospheres are driven by transfer of energy processes between stellar gas and the radiation field is...
  • Publicación
    NLTE analysis of high-resolution spectra of CSPN
    Preliminary results of new high-resolution and S/N ratio spectra of central stars of planetary nebulae (CSPN) are presented. The atmospheric parameters (Teff...