Back to the Abstract

	1 Introduction
	2 The sample
	3 Observations
	4 Data analysis
	5 CO models
	6 Comparison with the Center of Milky Way and the Cloverleaf QSO
	7 Conclusions
	References
	Online Material
	Appendix A: Convolution formulae
	Appendix B: Tables of data

	List of tables
	List of figures