The Location of Complex Molecules in G34.3 + 0.2: Further Evidence for Grain‐Surface Chemistry

In order to determine the location of the complex molecules CH 3 OH, CH 2 CHCN, HCOOCH 3 , CH 3 CH 2 CN, CH 3 CH 2 OH, and CH 3 OCH 3 and in the G34.3 + 0.2 star-forming complex, BIMA Array observations of transitions near 104 and 107 GHz were carried out with 13'' × 8'' resolution. One site of complex molecule emission was detected. This core is located near the cometary H II region G34.3 + 0.2 C. The proximity of this core containing complex species to an ultracompact H II region is quite similar to the Sgr B2(N) core. This similarity suggests that, as appears to be the case in Sgr B2(N), a nearby, newly-formed massive star has evaporated grain mantles, releasing large amounts of complex species into the gas phase.