Matthews H E, MacLeod J M, Broten N W, Madden S C, Friberg P
Herzberg Institute of Astrophysics, National Research Council, Ottawa.
Astrophys J. 1987 Apr 15;315(2):646-53. doi: 10.1086/165166.
Observations of OCS and a search for OC3S are reported, with particular reference to cold dust clouds. OCS has been detected for the first time in dark clouds with a mean fractional abundance relative to hydrogen of approximately 3 x 10(-9); this is approximately 4 times greater than that observed for giant molecular clouds. This results is discussed in the context of molecule formation mechanisms. Observations of the J = 1 --> 0 transition of OCS indicate that this transition is amplifying the background continuum radiation in the direction of Sgr B2.
