Molecular Parameters for C4

NRAO National Radio Astronomy Observatory


  • Laboratory measurements by Taylor, T. R., Xu, C., & Neumark, D. M. 1998, J. Chem. Phys., 108, 10,018

  • Molecular Constants:
  • Dipole Moment  A(ν5 = 1–0) ≃ 0.25 s-1; Martin, François, & Gijbels 1991; Watts et al. 1992; Taylor & Martin 1996; see also Van Orden & Saykally 1998]

     
  • Astronomical Detection: Carbon-rich evolved stars and SgrB2 ν5 band at 58 μm; could be assigned to C4H instead.  If C4, abundance is ~10-7

    Cernicharo, José, Goicoechea, Javier R., & Benilan, Yves 2002, Astrophysical Journal A New Infrared Band in Interstellar and Circumstellar Clouds: C4 C4H?


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