The role of ices in star-forming clouds
  Ices play a critical role during the evolution of interstellar clouds. Their
presence is ubiquitous in the dense molecular medium and their impact is not
only limited to chemistry. Species adsorbed onto dust grains also affect cloud
thermodynamics. It all depends on the interstellar conditions, the chemical
parameters, and the composition of ice layers. In this work, I study the
formation of ices by focusing on the interplay between gas and solid phase to
determine their role on cloud evolution and star formation. I show that while
the formation of ices greatly impacts the cloud chemistry, their role on the
thermodynamics is more conservative, and their influence on star formation is
only marginal.
