INTRODUCTION

OBSERVATIONS AND DATA ANALYSES

RESULTS

DISCUSSION  
5.1. HCN-to-HCO+ J=3–$\mathcal{Q}$ Flux Ratios  
5.4. Nuclear Dense Molecular Mass  
5.5. Relation between Dense Molecular Line and Infrared Luminosity  
5.6. Spatially Integrated Continuum Emission and Spectral Energy Distribution

SUMMARY