THE DENSE GAS IN THE LARGEST MOLECULAR COMPLEXES OF THE ANTENNAE: HCN AND HCO+ OBSERVATIONS OF NGC 4038/39 USING ALMA

We present observations of the dense molecular gas tracers , , and in the transition using the Atacama Large Millimeter/submillimeter Array. We supplement our data sets with previous observations of , which trace the total molecular gas content. We separate the Antennae into seven bright regions in which we detect emission from all three molecules, including the nuclei of NGC 4038 and NGC 4039, five super giant molecular complexes in the …