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We present simulated observations of gas kinematics in galaxies formed in 10pc resolution cosmological simulations with the hydrodynamical + N-body codeRAMSES, using the new RAMSES2HSIM pipeline with the simulated observingpipeline (HSIM) for the ELT HARMONI IFU spectrograph. We post-process thegalaxy's gas kinematics and H{\alpha} line emission for each simulation cell,and integrate the emission to produce an extinction-corrected input cube. Wethen simulate observations of the input cube with HARMONI, for a range ofexposure times, spatial sampling, and spectral resolution. We analyze the mockobservations to recover galaxy properties such as its kinematics and comparewith the known simulation values. We investigate the cause of biases betweenthe 'real' and 'observed' kinematic values, demonstrating the sensitivity ofthe inferred rotation curve to knowledge of the instrument's point spreadfunction.

Simulating gas kinematic studies of high-redshift galaxies with the HARMONI Integral Field Spectrograph