Vibrationally excited HC3N in NGC 4418 | Astronomy & Astrophysics (A&A)

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Table 2:

Excitation properties of HC₃N bending modes from Wyrowski et al. (1999).
Transition	$\lambda_{\rm ex}$	$A_{u\ell}$	$n_{\rm cr}$	Vibration
	[ $\mu$ m]	[s^-1]	[cm^-3]
v₆=1-0	20	0.15	3 $\times$ 10¹¹	CCN bend
v₇=1-0	45	6 $\times$ 10^-4	4 $\times$ 10⁸	CCC bend

Notice the large critical densities, see discussion in the text.

Source LaTeX | All tables | In the text

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