Carbon-chain molecule survey toward four low-mass molecular outflow sources

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Table 8

Abundances.

Source	C₄ H	HC₃ N J = 10–9	CCS	c–C₃ H₂	CCH	N₂H⁺	HC₃N J = 2–1	HC₅N	CCCS	SO
	E-9	E-10	E-10	E-10	E-9	E-10	E-9	E-9	E-10	E-9
I04181	2.8(11)	5.6(7)	8.2(15)	2.8(2)	19.4(69)	6.4(10)	10.0(9)	3.2(7)	9.0(15)	…
HH211	0.4(1)	0.4(1)	<0.7	0.2(0.2)	1.7(4)	2.6(3)	0.5(1)	…	…	0.8(1)
L1524	0.7(2)	0.9(2)	…	1.0(1)	5.0(17)	2.6(3)	3.3(4)	0.8(1)	1.4(3)	…
L1598	0.7(4)	<0.4	…	0.8(1)	3.0(24)	15.5(19)	…	…	…	…

Notes. The numbers in parentheses represent the errors in units of the last significant digits. The columns HC₃ N J = 10–9 and HC₃N J = 2–1 represent the HC₃ N abundance derived by the J = 10–9 transition and J = 2–1 transition, respectively.

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