High dense gas fraction in intensely star-forming dusty galaxies at high redshift

I. Oteo, Z-Y. Zhang, C. Yang +16

We present ALMA and VLA detections of the dense molecular gas tracers HCN, HCO${}^{+}$ and HNC in two lensed, high-redshift starbursts selected from the {\it Herschel}-ATLAS survey: {\…