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Detection of CS emission towards Cygnus OB2 No. 12

F. Scappini ; C. Cecchi-Pestellini ; S. Casu ; Michael Olberg (Institutionen för radio- och rymdvetenskap, Nationella anläggningen för radioastronomi)
Astronomy and Astrophysics (0004-6361). Vol. 466 (2007), p. 243-246.
[Artikel, refereegranskad vetenskaplig]

Aims.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. 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 $T_{\rm MB} = 0.15(2)$ K at $v_{\rm LSR} = 11.4(1)$ 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.

Nyckelord: ISM: clouds, ISM: lines and bands, ISM: molecules



Denna post skapades 2007-05-09. Senast ändrad 2014-09-02.
CPL Pubid: 41424

 

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Institutioner (Chalmers)

Institutionen för radio- och rymdvetenskap, Nationella anläggningen för radioastronomi (2005-2010)

Ämnesområden

Astronomi, astrofysik och kosmologi

Chalmers infrastruktur