We surveyed 81 dense molecular cores associated with regions of massive star formation and Sgr A in the J_(K_-1_K_1_)=5_(05)-4_(04) and 10(010)-9_(09) lines of HNCO. Line emission was detected towards 57 objects. Selected subsamples were also observed in the 1(01)-0_(00), 4(04)-3_(03), 7(07)-6_(06), 15(015)-14_(014), 16(016)-15_(015) and 21(021)-20_(020) lines, covering a frequency range from 22 to 461 GHz. HNCO lines from the K(-1)=2,3 ladders were detected in several sources. Towards Orion-KL, K_(-1)=5 transitions with upper state energies E_u/k~1100 and 1300K could be observed. The tables contain the source lists and the results of these SEST observations.
Cone search capability for table J/A+A/361/1079/table1 (Source list for SEST observations)
Cone search capability for table J/A+A/361/1079/table2 (Source list for Onsala observations)