| We present high-resolution observations of molecular line and continuum emission toward the massive star-forming complexes Sgr B2 and W33A with the BIMA millimeter array, the Very Large Array and the FCRAO 14m telescope. Several star-forming cores in various evolutionary states are found in these complexes, allowing us to study the chemistry and physical conditions and how these are related to evolutionary state and environment. Similar to previous work, we find that the hot-cores, dense concentrations of star-forming gas heated by embedded newborn stars, have distinctive molecular abundances that derive from chemistry mediated by dust grains. However, we find significant variations in abundances among the hot cores, which can be attributed to both evolutionary and environmental effects. Very large NH... |
