Journal: Astronomy and Astrophysics

  • Publication
    The alpha -element abundances in the most oxygen-poor planetary nebula PNG 135.9+55.9
    We present extensive new spectroscopy and imaging of PNG 135.9+55.9. We use these data as constraints to photoionization models to derive limits on the oxygen...
  • Publication
    The AMIGA sample of isolated galaxies. XIV. Disc breaks and interactions through ultra-deep optical imaging
    Context. In the standard cosmological model of galaxy evolution, mergers and interactions play a fundamental role in shaping galaxies. Galaxies that are...
  • Publication
    The Apsidal Motion Test of the Internal Stellar Structure - Comparison Between Theory and Observations
    In this paper we present the main results of an extensive comparison carried out between the most modern theoretical models of stellar structure, including...
  • Publication
    The ARAUCARIA project: Grid-based quantitative spectroscopic study of massive blue stars in NGC 55
    Context. The quantitative study of the physical properties and chemical abundances of large samples of massive blue stars at different metallicities is a...
  • Publication
    The Araucaria Project: VLT-spectroscopy of blue massive stars in NGC 55
    Aims: This is the first paper of a series devoted to studying the population of blue massive stars in NGC 55, a galaxy of the Sculptor group at a distance of...
  • Publication
    The Arches cluster revisited. II. A massive eclipsing spectroscopic binary in the Arches cluster
    We have carried out a spectroscopic variability survey of some of the most massive stars in the Arches cluster, using K-band observations obtained with SINFONI...
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    The Arches cluster revisited. III. An addendum to the stellar census
    The Arches is one of the youngest, densest and most massive clusters in the Galaxy. As such it provides a unique insight into the lifecycle of the most massive...
  • Publication
    The atmosphere and architecture of WASP-189 b probed by its CHEOPS phase curve
    Context. Gas giants orbiting close to hot and massive early-type stars can reach dayside temperatures that are comparable to those of the coldest stars. These...
  • Publication
    The atmosphere of HD 209458b seen with ESPRESSO. No detectable planetary absorptions at high resolution
    We observed two transits of the iconic gas giant HD 209458b between 380 and 780 nm, using the high-resolution ESPRESSO spectrograph. The derived planetary...