Astrophysical: Methods

  • Publication
    Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes
    To understand the formation and evolution of solar-type stars in the solar neighborhood, we need to measure their stellar parameters to high accuracy. We...
  • Publication
    Spectroscopic study of Ceres' collisional family candidates
    Context. Despite the observed signs of large impacts on the surface of Ceres, there is no confirmed collisional family associated with this dwarf planet. After...
  • Publication
    Spectroscopy at the solar limb. I. Average off-limb profiles and Doppler shifts of Ca II H
    Aims: We present constraints on the thermodynamical structure of the chromosphere from ground-based observations of the Ca ii H line profile near and off the...
  • Publication
    Spectroscopy from Photometry Using Sparsity: The SDSS Case Study
    We explore whether medium-resolution stellar spectra can be reconstructed from photometric observations, taking advantage of the highly compressible nature of...
  • Publication
    Spectroscopy of the binary TNO Mors-Somnus with the JWST and its relationship to the cold classical and plutino subpopulations observed in the DiSCo-TNO project
    Context. Trans-Neptunian objects (TNOs) are remnants of small icy bodies from planetary formation that orbit in the region beyond Neptune. Within the population...
  • Publication
    SpectroTranslator: Deep-neural network algorithm for homogenising spectroscopic parameters
    Context. In modern Galactic astronomy, stellar spectroscopy plays a pivotal role in complementing large photometric and astrometric surveys and enabling deeper...
  • Publication
    Spectrum radial velocity analyser (SERVAL). High-precision radial velocities and two alternative spectral indicators
    Context. The CARMENES survey is a high-precision radial velocity (RV) programme that aims to detect Earth-like planets orbiting low-mass stars. Aims: We develop...
  • Publication
    Spin alignment of dark matter haloes in the shells of the largest voids
    Using the high-resolution cosmological N-body simulation MareNostrum universe we study the orientation of shape and angular momentum of galaxy-size dark matter...
  • Publication
    Spiral-shaped wavefronts in a sunspot umbra
    Context. Solar active regions show a wide variety of oscillatory phenomena. The presence of the magnetic field leads to the appearance of several wave modes...