Chemistry in the First Hydrostatic Core Stage By Adopting Three-Dimensional Radiation Hydrodynamic Simulations

摘要: We investigate molecular evolution from a cloud core to first hydrostatic in three spatial dimensions. perform radiation hydrodynamic simulation order trace fluid parcels, which is investigated, using gas-phase and grain-surface chemical reaction network. derive distributions of abundances column densities the harboring core. find that total gas ice many species cold era (10 K) remain unaltered until temperature reaches ~500 K. The warm envelope outer layer (T 700 also large organic molecules, such as CH3OH HCOOCH3, are associated with (r < 10 AU). Although these molecules stage comparable or less than protostellar (hot corino), reflecting lower luminosity central object, their our model observed values toward prototypical hot corino, IRAS 16293-2422. propose can be good tracers cores.