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A multiwavelength investigation of the southern infrared dust bubble CS51 ispresented in this paper. We probe the associated ionized, cold dust, molecularand stellar components. Radio continuum emission mapped at 610 and 1300 MHz,using the Giant Metrewave Radio Telescope, India, reveal the presence of threecompact emission components (A, B, and C) apart from large-scale diffuseemission within the bubble interior. Radio spectral index map show thecoexistence of thermal and non-thermal emission components. Modified blackbodyfits to the thermal dust emission using Herschel PACS and SPIRE data isperformed to generate dust temperature and column density maps. We identifyfive dust clumps associated with CS51 with masses and radius in the range 810 -4600 M{\sun} and 1.0 - 1.9 pc, respectively. We further construct the columndensity probability distribution functions of the surrounding cold dust whichdisplay the impact of ionization feedback from high-mass stars. The estimateddynamical and fragmentation timescales indicate the possibility of collect andcollapse mechanism in play at the bubble border. Molecular line emission fromthe MALT90 survey is used to understand the nature of two clumps which showsignatures of expansion of CS51.

Infrared dust bubble CS51 and its interaction with the surrounding interstellar medium