Sulphur chemistry in the envelopes of massive young stars

F. F. S. van der Tak, A. M. S. Boonman, R. Braakman +1

We present submillimeter observations of SO, SO2, H2S, H2CS, OCS, NS and HCS+ toward nine massive young stars. The outflow contributes ~50% to the SO and SO2 emission in 15-20'' be…