5 Summary

We see that our results are mostly in agreement with those previously published (where these exist) and by using the full map (global) values of these in conjunction with those of the distant sample (Curran et al. 2000, Table 5), in Paper II we will analyse these results and draw our conclusions.

 

 

Table 5: Recap of the luminosities (with $1\sigma$ errors) [ $\times 10^{3}$ K km s^-1 kpc²] for the distant sample galaxies in which HCN was detected (adapted from Curran et al. 2000)

Galaxy	D	$L_{\rm CO~1\rightarrow0}$	$L_{\rm HCN~1\rightarrow0}$	Ratio	$L_{\rm FIR}$
NGC 0034	79	$2.3\pm0.1$	$0.56\pm0.07$	4.1	14.3
NGC 1667	61	$1.18\pm0.08$	$0.45\pm0.06$	2.6	4.2
Mrk 231	170	$6.0\pm0.6$	$1.0\pm0.2$	6.0	128
Mrk 273	150	$2.4\pm0.4$	$2.4\pm0.8$	$\approx$1	73
NGC 5135	55	$2.0\pm0.1$	$0.11\pm0.01$	18	9.0
Arp 220	71	$2.6\pm0.1$	$0.4\pm0.2$	6.5	84
NGC 7130	65	$2.6\pm0.2$	$0.16\pm0.02$	16	11.9
NGC 7469	65	$2.00\pm0.09$	$0.25\pm0.07$	8.0	18.2
Average	90	2.6	0.67	$6\pm2$	43

Acknowledgements

We wish to thank the referee R. Antonucci for his prompt and helpful comments. Also, Lars E. B. Johansson for his advice, Francisco Azagra at SEST for staying up to monitor the impromtu SEST observations of NGC 1068, Aage Sandqvist for his NGC 1365 data as well as Felipe Mac-Auliffe and Saul Vidal at La Silla for getting the Dahlem et al. (1993) data from 9-track tape, and Susanne Hüttemeister for her permission to use it. This research made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.