Detection of CS emission towards Cygnus OB2 No. 12
Istituto per lo Studio dei Materiali Nanostrutturati del C.N.R., via P. Gobetti 101, 40129 Bologna, Italy e-mail: F.Scappini@bo.ismn.cnr.it
2 INAF - Osservatorio Astronomico di Cagliari, Strada n.54, Loc. Poggio dei Pini, 09012 Capoterra (CA), Italy e-mail: [ccp;silvia]@ca.astro.it
3 Onsala Space Observatory, 43900 Onsala, Sweden e-mail: email@example.com
Accepted: 27 January 2007
Aims.The CS line was searched at locations with brightest 13CO emissions in the region in front of the star Cyg OB2 No. 12.
Methods.The observations were made with the 20-m millimeter wave telescope at Onsala using a 1024-channel autocorrelator with a resolution of 50 kHz (0.14 km s-1).
Results.The line was detected only in one position (core B) with main beam brightness temperature K at km s-1.
Conclusions.The line excitation analysis suggests that core B could be a Bok globule in consideration of its morphology, chemistry and physical conditions.
Key words: ISM: clouds / ISM: lines and bands / ISM: molecules
© ESO, 2007