Orateur
Description
Dust grain surface chemistry plays an important role in the formation and freeze-out of molecules that are key to the chemical network and govern the formation of cores from the diffuse interstellar medium. The evolution of dust properties such as grain sizes from the diffuse interstellar medium to dense cores is not well understood. We present IRAM-30m observations towards eight starless cores obtained with the NIKA-2 camera and with EMIR, combining 2mm and 1mm continuum observations with spectral line observations of key species of the gas phase. The aim is to study the evolution of grain properties and their dependence on the environment. Eventually, we plan to delineate a comprehensive evolutionary trend by combining the dust properties derived from NIKA-2 with the gas chemical composition as determined with GEMS data and performing a detailed comparison with state-of-the-art hydrodynamical models. Complementary Herschel data are available. In addition, we have obtained MUSTANG-2 3mm maps of all cores.
