Journal: Astronomy and Astrophysics

  • Publication
    EK Cephei B: a test object for pre-ZAMS models of solar-type stars
    From high-resolution spectroscopy in the Li I λ67O.8 nm region of the double-lined detached eclipsing binary system EK Cepheid, we find a surface lithium...
  • Publication
    Electron-beam interaction with emission-line clouds in blazars
    Context. An electron-positron beam escaping from the magnetospheric vacuum gap of an accreting black hole interacts with recombination-line photons from...
  • Publication
    Embedded AGN and star formation in the central 80 pc of IC 3639
    Aims: Our goal is to probe the inner structure and the nature of the mid-IR emission in the active galaxy IC 3639, which hosts a Seyfert 2 nucleus and shows...
  • Publication
    Emergence of magnetic flux from the convection zone into the corona
    Numerical experiments of the emergence of magnetic flux from the uppermost layers of the solar interior to the photosphere and its further eruption into the low...
  • Publication
    Emergence of magnetic flux sheets in the quiet Sun: I. Statistical properties
    Context. Small-scale magnetic flux emergence in the quiet Sun is crucial for maintaining solar magnetic activity. On the smallest scales studied so far, namely...
  • Publication
    EMIR, the near-infrared camera and multi-object spectrograph for the GTC. EMIR at GTC
    We present EMIR, a powerful near-infrared (NIR) camera and multi-object spectrograph (MOS) installed at the Nasmyth focus of the 10.4 m GTC. EMIR was...
  • Publication
    Empirical determination of atomic line parameters of the 1.5 μm spectral region
    Context. Both the quality and amount of astrophysical data are steadily increasing over time owing to the improvement of telescopes and their instruments. This...
  • Publication
    Empirical mass-loss rates and clumping properties of O-type stars in the Large Magellanic Cloud
    Context. The nature of mass-loss in massive stars is one of the most important and difficult to constrain processes in the evolution of massive stars. The...
  • Publication
    Empirical relations between the intensities of Lyman lines of H and He<SUP>+</SUP>
    Context. Empirical relations between major UV and extreme UV spectral lines are one of the inputs for models of chromospheric and coronal spectral radiances and...