Herschel-SPIRE FTS spectroscopy of the carbon-rich objects AFGL 2688, AFGL 618, and NGC 7027

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Table 2:

Unidentified strong lines in the spectrum of AFGL 2688.
$\bar{\nu}_0$ (cm^-1)	$\lambda_0$ ( $\mu$ m)	F( $\times$ 10^-18Wm^-2)	Possible carriers
15.657	638.69	201.3 $\pm$ 9.0	NH₂
15.762	634.44	139.5 $\pm$ 8.7	H¹³CN v2 ; ³⁰SiS
15.931	627.71	116.1 $\pm$ 8.4	SiO 11-10
16.547	604.34	193.8 $\pm$ 6.3	NH₂
16.675	599.70	122.7 $\pm$ 5.1	H¹³CN v1+v2
16.856	593.26	304.8 $\pm$ 12.0	o-SH₂
16.998	588.30	193.8 $\pm$ 21.9	CH₂
17.927	557.82	194.1 $\pm$ 8.4	CH
18.766	532.88	122.1 $\pm$ 3.9	SiS ; SiO 13-12
18.945	527.84	195.0 $\pm$ 3.9	p-SH₂
19.440	514.40	159.9 $\pm$ 3.6
20.122	496.97	130.5 $\pm$ 7.5
21.208	471.52	201.6 $\pm$ 12.0
29.287	341.45	141.9 $\pm$ 4.8	HCN v2+2v3 ; C₁₈O
31.479	317.67	134.7 $\pm$ 20.4
31.778	314.68	114.9 $\pm$ 20.4	NH₂
32.665	306.14	150.3 $\pm$ 7.8	HCN $\nu_2 = 0$
36.432	274.48	109.5 $\pm$ 15.6
38.842	257.45	105.9 $\pm$ 4.8
39.685	251.98	100.5 $\pm$ 6.0
47.456	210.72	101.7 $\pm$ 72.3	HCN $\nu_2 = 1$
47.522	210.43	128.1 $\pm$ 85.5
49.589	201.66	146.1 $\pm$ 27.0
50.814	196.80	114.9 $\pm$ 22.2	HCN 3v2

Source LaTeX | All tables | In the text

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