Investigating AGN/Starburst activities through ALMA multi-line observations in the mid-stage IR-bright merger VV 114

We present ALMA cycle 0 observations of the luminous merger VV 114. One of the main goals is to investigate mechanisms of molecular line ratio enhancement. Regions with the high ¹²CO (1-0)/¹³CO (1-0) and ¹²CO (3-2)/¹²CO (1-0) is located at a central filamentary structure (~6 kpc) in VV 114. The filament consists of the eastern nucleus and the overlap region, where the galaxy disks are colliding. We also investigate these molecular line ratios on the Kennicutt-Schmidt law. VV 114 fills a gap between the ``starburst'' sequence and the ``normal disk'' sequence, and regions with the high ratios show the high Σ_SFR and Σ_H2 . We suggest that the high ratios in VV 114 are due to star-forming activities in the both progenitor's nuclei and the merger-induced overlap region.