Laboratory measurement of optical constants of solid SiO and application to circumstellar dust

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Table 2

Brendel oscillator parameters for the dielectric function from the temperature dependent condensation and annealing experiments of Wetzel et al. (2012a).

T[K]	No.	ω₀	ω_p	σ

40 K	1	1077	336	52
	2	957	682	63
	3a	750	231	51
	3b	642	289	64

93 K	1	1082	324	49
	2	966	685	61
	3a	760	205	47
	3b	678	205	48

300 K	1	1100	329	47
	2	983	709	57
	3a	767	203	46
	3b	670	221	48

373 K	1	1108	338	51
	2	986	729	58
	3a	780	233	48
	3b	669	274	58

473 K	1	1113	338	50
	2	994	736	58
	3a	784	238	49
	3b	668	270	59

573 K	1	1115	359	51
	2	1000	733	55
	3a	786	238	48
	3b	667	271	61

673 K	1	1117	396	54
	2	1010	720	52
	3a	791	245	48
	3b	661	272	68

773 K	1	1125	406	54
	2	1022	712	50
	3a	791	239	48
	3b	662	254	67

873 K	1	1135	401	54
	2	1031	706	49
	3a	791	234	47
	3b	661	229	62

Notes.All values are given in cm^-1. Oscillator parameters for temperatures below 350 K are taken from condensation experiments and above 350 K from annealing experiments. A splitting of the peak around 730 cm^-1 is observed at higher temperatures and was taken into account for all measurements.

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