Astrofísicas: Nucleosíntesis

  • Publicación
    Timing the r-process Enrichment of the Ultra-faint Dwarf Galaxy Reticulum II
    The ultra-faint dwarf galaxy Reticulum II (Ret II) exhibits a unique chemical evolution history, with ${72}_{-12}^{+10}$ % of its stars strongly enhanced in r...
  • Publicación
    Understanding Galactic planetary nebulae with precise/reliable nebular abundances
    We compare recent precise/reliable nebular abundances - as derived from high-quality optical spectra and the most recent ICFs - in a sample of Galactic...
  • Publicación
    Unveiling the chemical fingerprint of phosphorus-rich stars. I. In the infrared region of APOGEE-2
    Context The origin of phosphorus, one of the essential elements for life on Earth, is currently unknown. Prevalent models of Galactic chemical evolution (GCE)...
  • Publicación
    Unveiling the chemical fingerprint of phosphorus-rich stars: II. Heavy-element abundances from UVES/VLT spectra
    Context. The atmospheres of phosphorus-rich (P-rich) stars have been shown to contain between 10 and 100 times more P than our Sun. Given its crucial role as an...
  • Publicación
    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...