Abundance of SiC2 in carbon star envelopes - Evidence that SiC2 is a gas-phase precursor of SiC dust

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Volume 611 (March 2018)

A&A, 611 (2018) A29

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Table A.2

Observed parameters of the SiC ³ Π₂ J = 4− 3 line.

Source	ν_calc	ν_obs	V _e
	(MHz)	(MHz)	(km s⁻¹)	(K km s⁻¹)
IRC +10216	157494.101	157494.1(1)	15.4(8)	5.86(6)
CIT 6	157494.101	157493.2(10)	15.4(8)	0.96(9)
CRL 3068	157494.101	157494.2(5)	15.7(5)	0.29(6)
IRC +30374	157494.101	157495.5(10)	25.1(10)	0.18(3)^a
LP And	157494.101	157493.8(5)	14.4(4)	0.56(6)
V Cyg	157494.101	157496.3(10)	11.3(10)	0.11(2)^a
V384 Per	157494.101	157493.7(10)	15.2(10)	0.17(3)^a
IRC +60144	157494.101	157492.8(10)	20.2(10)	0.12(6)^a
IRC +20370	157494.101	157494.3(10)	15.8(10)	0.13(2)^a
CRL 67	157494.101	157494.8(10)	16.6(10)	0.28(6)^a
CRL 2477	157494.101	157493.7(10)	18.7(10)	0.10(2)^a
CRL 2494	157494.101	157493.5(10)	21.8(10)	0.23(4)^a

Numbers in parentheses are 1σ uncertainties in units of the last digits.

Marginal detection.

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