Journal: Astronomy and Astrophysics

  • Publication
    Effect of the stellar absorption line centre-to-limb variation on exoplanet transmission spectrum observations
    Transit spectroscopy is one of the most commonly used techniques for exoplanet atmosphere characterisation. This technique has been used to detect ionised and...
  • Publication
    Effects of a dependence of meteor brightness on the entry angle.
    In this paper we discuss the observational consequences of a dependence of meteor brightness on the entry angle z_R_, namely the decrease of the observed rates...
  • Publication
    Effects of photon escape on diagnostic diagrams for H II regions
    In this article we first outline the mounting evidence that a significant fraction of the ionizing photons emitted by OB stars within H ii regions escape from...
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    Effelsberg 100-m polarimetric observations of a sample of compact steep-spectrum sources
    Aims: We completed observations with the Effelsberg 100-m radio telescope to measure the polarised emission from a complete sample of compact steep-spectrum...
  • Publication
    Eight more ultra luminous X-ray candidates unmasked
    Aims:We aim to identify the nature of several objects previously catalogued as ultra-luminous X-ray (ULX) source candidates. Methods: Long-slit spectroscopy of...
  • 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...