Silicon carbide in circumstellar environment

  title={Silicon carbide in circumstellar environment},
  author={G. Pascoli and M. Comeau},
  journal={Astrophysics and Space Science},
The presence of small clusters of silicon carbide (SiC) in circumstellar dust shells surrounding late-type stars is inferred from a broad emission feature peaking at around 11µm in infrared spectra [1]. These clusters are expected to condense from molecular arrangements composed of a few carbon and silicium atoms which are present in stellar winds surrounding carbon-rich late-type stars. We have searched for the possible geometric structures of SiCn+ radicals (n ≤ 5) on the basis ofab initio… Expand