SO survey of massive cores
  We present the results of a survey of several tens of dense high mass star
forming (HMSF) cores in three transitions of the SO molecule at 30 and 100 GHz
with the 100-m Effelsberg and 20-m Onsala radio telescopes. The physical
parameters of the cores are estimated from the line ratios and column
densities. Relative abundances are derived as well.
