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

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Table 2

Observational parameters.

Transition	ν [GHz]^a	HPBW [′′]^b	η_mb^b

IRAM:
HC₃N 10–9	90.979	28	0.80
HC₃N 12–11	109.174	24	0.73
HC₃N 16–15	145.561	17	0.67
HC₃N 25–24	227.419	10.5	0.63
HC₃N 28–27	254.699	9	0.59
HCN 1–0	88.632	28	0.80
HNC 1–0	90.664	28	0.80
OSO:
HC₃N 12–11	109.174	36	0.52
HC₃N 10–9	90.979	42	0.59
SEST:
HC₃N 10–9	90.979	55	0.75
HCN 1–0	88.632	57	0.75
HNC 1–0	90.664	55	0.75

Notes.

^(a)

From the NIST database Recommended Rest Frequencies for Observed Interstellar Molecular Microwave Transitions (http://physics.nist.gov/cgi-bin/micro/table5/start.pl).

^(b)

The half-power beamwidths and main beam efficiencies are collected from the respective telescope web pages.

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