Spectroscopic parameters for silacyclopropynylidene, SiC2, from extensive astronomical observations toward CW Leo (IRC +10216) with the Herschel satellite

Authors
  • H.S.P. Müller
  • J. Cernicharo
  • M. Agúndez
  • L. Decin
Publication date 2012
Journal Journal of Molecular Spectroscopy
Volume | Issue number 271 | 1
Pages (from-to) 50-55
Organisations
  • Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
Abstract A molecular line survey has been carried out toward the carbon-rich asymptotic giant branch star CW Leo employing the HIFI instrument on board of the Herschel satellite. Numerous features from 480 GHz to beyond 1100 GHz could be assigned unambiguously to the fairly floppy SiC2 molecule. However, predictions from laboratory data exhibited large deviations from the observed frequencies even after some lower frequency data from this survey were incorporated into a fit. Therefore, we present a combined fit of all available laboratory data together with data from radio-astronomical observations.
Document type Article
Language English
Published at https://doi.org/10.1016/j.jms.2011.11.006
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