2007A&A...466..243S

The CS (J=2-1) line was searched at locations with brightest ¹³CO (J=1-0) emissions in the region in front of the star Cyg OB2 No. 12. The observations were made with the 20-m millimeter wave telescope at Onsala using a 1024-channel autocorrelator with a resolution of 50kHz (0.14km/s). The line was detected only in one position (core B) with main beam brightness temperature T_MB=0.15(2)K at v_LSR=11.4(1)km/s. The line excitation analysis suggests that core B could be a Bok globule in consideration of its morphology, chemistry and physical conditions.