Publication type: Refereed

  • Publication
    NuSTAR as an Axion Helioscope
    We present a novel approach to investigating axions and axionlike particles by studying their potential conversion into x-rays within the Sun's atmospheric...
  • Publication
    O-star mass-loss and wind momentum rates in the Galaxy and the Magellanic Clouds Observations and theoretical predictions.
    A new, very fast approximate method is presented to determine mass-loss rates of O-stars from Halpha_ line profiles. The method uses H and HeII departure...
  • Publication
    OB stars at the lowest Local Group metallicity. GTC-OSIRIS observations of Sextans A
    Context. Massive stars play an important role in the chemical and dynamical evolution of the Universe. The first metal-poor stars may have started the...
  • Publication
    Obliquities of exoplanet host stars: Nineteen new and updated measurements, and trends in the sample of 205 measurements
    Measurements of the obliquities in exoplanet systems have revealed some remarkable architectures, some of which are very different from the Solar System. Nearly...
  • Publication
    Obliquity measurement and atmospheric characterisation of the WASP-74 planetary system
    We present new transit observations of the hot Jupiter WASP-74 b (T eq ~ 1860 K) using the high-resolution spectrograph HARPS-N and the multi-colour...
  • Publication
    Obscuration beyond the nucleus: infrared quasars can be buried in extreme compact starbursts
    In the standard quasar model, the accretion disc obscuration is due to the canonical dusty torus. Here, we argue that a substantial part of the quasar...
  • Publication
    Obscured active galactic nuclei from the ELAIS Deep X-ray Survey
    The sources discovered in deep hard X-ray surveys with 2-8 keV fluxes of S2-8˜ 10-14 erg cm-2 s-1 make up the bulk of the X-ray background at these energies...
  • Publication
    Observaciones de Estrellas Centrales de Nebulosas Planetarias Desde La Palma
    Not Available
  • Publication
    Observation and Interpretation of Leonid Impact Flashes on the Moon in 2001
    We present observations of lunar Leonid impact flashes recorded in 2001 November from Spain. Four impact flashes were detected on November 18. Another flash was...