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We present high-resolution (0.17\arcsec $\times$ 0.14\arcsec) Atacama LargeMillimeter/submillimeter Array (ALMA) observations of the CO\,(6-5) line, and435\um\ dust continuum emission within a $\sim$9\arcsec $\times$ 9\arcsec\ areacentered on the nucleus of the galaxy NGC\,5135. NGC\,5135 is a well-studiedluminous infrared galaxy that also harbors a Compton-thick active galacticnucleus (AGN). At the achieved resolution of 48 $\times$ 40\,pc, the CO\,(6-5)and dust emissions are resolved into gas "clumps" along the symmetrical dustlanes associated with the inner stellar bar. The clumps have radii between$\sim$45-180\,pc and CO\,(6-5) line widths of $\sim$60-88\,\kms. The CO\,(6-5)to dust continuum flux ratios vary among the clumps and show an increasingtrend with the \FeII/Br-$\gamma$ ratios, which we interpret as evidence forsupernova-driven shocked gas providing a significant contribution to the \co65\emission. The central AGN is undetected in continuum, nor in CO\,(6-5) if itsline velocity width is no less than $\sim$\,40\,\kms. We estimate that the AGNcontributes at most 1\% of the integrated CO\,(6-5) flux of 512 $\pm$24$\,$Jy\kms\ within the ALMA field of view, which in turn accounts for$\sim$32\% of the CO\,(6-5) flux of the whole galaxy.

ALMA Observation of NGC5135: The Circumnuclear CO(6-5) and Dust Continuum Emission at 45 Parsec Resolution[$\star$]