Abstract
We present the initial results of a spectral line survey of L1157 B1 with the Nobeyama 45 m telescope. So far, we have covered the frequencey range of 13.7 GHz (82.0–94.5 GHz and 96.3–97.5 GHz), and have detected 22 species including CH3 CHO, HCOOH, HCOOCH3 , HNCO, NH2 CHO, CH3 CN, and CCS. We have also detected the line of CH2 DOH. These results demonstrate rich chemistry in this shocked region, which would mainly originate from evaporation of ice mantles by means of shocks.
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