Journal: Astronomy and Astrophysics

  • Publication
    What is the Milky Way outer halo made of?. High resolution spectroscopy of distant red giants
    In a framework where galaxies form hierarchically, extended stellar haloes are predicted to be an ubiquitous feature around Milky Way-like galaxies and to...
  • Publication
    When binaries keep track of recent nucleosynthesis. The Zr-Nb pair in extrinsic stars as an s-process diagnostic
    Context. Barium stars are s-process enriched giants. They owe their chemical peculiarities to a past mass transfer phase. During this phase they were polluted...
  • Publication
    When nature tries to trick us. An eclipsing eccentric close binary superposed on the central star of the planetary nebula M 3-2
    Bipolar planetary nebulae (PNe) are thought to result from binary star interactions and, indeed, tens of binary central stars of PNe have been found, in...
  • Publication
    When the horseshoe fits: Characterizing 2023 FY<SUB>3</SUB> with the 10.4 m Gran Telescopio Canarias and the Two-meter Twin Telescope
    Context. The Arjuna asteroid belt is loosely defined as a diverse group of small asteroids that follow dynamically cold, Earth-like orbits. Most of them are not...
  • Publication
    Whole Earth Telescope observations and seismological analysis of the cool ZZ Ceti star GD 154.
    This paper presents the results of high speed photometric observations of the cool variable DA white dwarf (DAV) GD 154 obtained with the Whole Earth Telescope...
  • Publication
    Whole Earth Telescope observations of BPM 37093: A seismological test of crystallization theory in white dwarfs
    BPM 37093 is the only hydrogen-atmosphere white dwarf currently known which has sufficient mass (~1.1 M&sun;) to theoretically crystallize while still inside...
  • Publication
    Whole Earth telescope observations of the ZZ Ceti star HL Tau 76
    This paper analyses the Whole Earth Telescope observations of HL Tau 76, the first discovered pulsating DA white dwarf. The star was observed during two Whole...
  • Publication
    WHT follow-up observations of extremely metal-poor stars identified from SDSS and LAMOST
    Aims: We have identified several tens of extremely metal-poor star candidates from SDSS and LAMOST, which we follow up with the 4.2 m William Herschel Telescope...
  • Publication
    Wide binaries in planetary nebulae with Gaia DR2
    Context. The Gaia Data Release 2 (DR2) was used to select a sample of 211 central stars of planetary nebulae (CSPNe) with good-quality astrometric measurements...