Browsing by Author "Chiappini, Cristina"

Now showing items 1-2 of 2

    • Abundances of carbon-enhanced metal-poor stars as constraints on their formation 

      Hansen, C.J.; Nordström, B.; Hansen, T.T.; Kennedy, C.R.; Placco, V.M.; Beers, T.C.; Andersen, J.; Cescutti, Gabriele; Chiappini, Cristina (2016-04-01)
      Context. An increasing fraction of carbon-enhanced metal-poor (CEMP) stars is found as their iron abundance, [Fe/H], decreases below [Fe/H] =−2.0. The CEMP-s stars have the highest absolute carbon abundances, [C/H], and ...

    • S-process production in rotating massive stars at solar and low metallicities 

      Frischknecht, Urs; Hirschi, Raphael; Pignatari, Marco; Maeder, André; Meynet, George; Chiappini, Cristina; Thielemann, Friedrich Karl; Rauscher, Thomas; Georgy, Cyril; Ekström, Sylvia (2015-12-28)
      Rotation was shown to have a strong impact on the structure and light element nucleosynthesis in massive stars. In particular, models including rotation can reproduce the primary nitrogen observed in halo extremely metal ...