A survey of HC3N in extragalactic sources - Is HC3N a tracer of activity in ULIRGs?

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Table 7

Calculated line ratios.

Galaxy

Arp 220	0.19 ± 0.07^a	0.42 ± 0.2^a	0.45 ± 0.1
Arp 220	0.78 ± 0.06^b	1.73 ± 0.4^b	0.45 ± 0.1
Circinus	0.24 ± 0.04	0.51 ± 0.06	0.48 ± 0.08
IC 342	0.28 ± 0.08	0.28 ± 0.08	1.00 ± 0.1
IC 694	< 0.61^c	< 0.34^c	1.79 ± 0.5
IC 860	...	0.11 ± 0.02^d	...
I17208	0.16 ± 0.02^e	0.30 ± 0.03	0.53 ± 0.05^e
I17208	0.062 ± 0.01^f	0.30 ± 0.03	0.21 ± 0.05^f
M82	0.21 ± 0.02^c	0.96 ± 0.1^c	0.22 ± 0.02
Maffei 2	0.20 ± 0.02^c	0.25 ± 0.03^c	0.81 ± 0.1
NGC 34	< 0.35	...	< 0.34
NGC 253	0.094 ± 0.01	0.15 ± 0.02	0.63 ± 0.04
NGC 613	< 0.46	...	< 0.44
NGC 1056	...	...	...
NGC 1068	0.072 ± 0.06	0.15 ± 0.15^g	0.45 ± 0.19^g
NGC 1365	< 0.13	< 0.17	0.74 ± 0.20
NGC 1377	< 0.26^h	...	< 0.32
NGC 1614	< 0.25	...	< 0.24
NGC 1808	0.05 ± 0.025	0.18 ± 0.09	0.29 ± 0.02
NGC 2146	< 0.20	< 0.85	0.26 ± 0.06
NGC 2623	...	< 0.70^c	...
NGC 3079	0.13 ± 0.02ⁱ	0.26 ± 0.05ⁱ	0.51 ± 0.11ⁱ
NGC 3256	< 0.065	< 0.20	0.32 ± 0.04
NGC 3690	< 0.39^c	...	...
NGC 4418	0.40 ± 0.04	0.65 ± 0.09	0.61 ± 0.06
NGC 4945	0.09 ± 0.01	0.17 ± 0.02	0.51 ± 0.02
NGC 5135	< 0.26	...	< 0.25
NGC 6946	< 0.073^c	< 0.10^c	0.71 ± 0.1
NGC 7130	< 0.18	< 0.25	0.71 ± 0.1
UGC 5101	< 0.084	< 0.09	0.91 ± 0.1

Notes. The HC₃N line used is the 10–9 line, whenever it is available. If another line is used, this is stated below. The errors are 1σ and have been calculated by error propagation from the errors given in Tables 4–6.

^(a)

HC₃N value from Aalto et al. (2002) used.

^(b)

HC₃N value from this work used.

^(c)

HC₃N 12-11 line.

^(d)

HC₃N 28-27 line.

^(e)

HCN value from Graciá-Carpio et al. (2008) used.

^(f)

HCN value from Gao & Solomon (2004) used.

^(g)

HNC value from Pérez-Beaupuits et al. (2007) used.

^(h)

HC₃N 16-15 line.

⁽ⁱ⁾

HCN and HNC values from Pérez-Beaupuits et al. (2007) used.

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