Odin spectral line observations of Sgr A and Sgr B2 at submm wavelengths and in the 118-GHz band

Aa. Sandqvist, P. Bergman, P. Bernath, U. Frisk, A. Hjalmarson, B. Larsson, M. Lindqvist, M. Olberg, A. O. H. Olofsson, L. Pagani

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Since its launch in 2001, the Odin satellite has been observing the Galactic Centre Sgr A Complex (CND, +20 and +50 km s(-1) Clouds) as well as the nearby stax formation region, Sgr B2, a number of times. Observations have been made in the 118-119 GHz and 486-581 GHz bands. A limited mapping of the Sgr A Complex in the (H2O)-O-16 line has been performed and new observations of the (H2O)-O-18 line took place in 2006. In the 118-119 GHz band, a strong line of HC3N (J = 13 - 12) has been detected at a number of positions - sensitive upper limits have been obtained for the O-2 (1(1) - 1(0)) and the SiC ((3)Pi(2), J = 3 - 2) lines. Towards Sgr B2, submm observations have yielded absorption profiles of (H2O)-O-16, (H2O)-O-18, (H2O)-O-17, NH3, and (NH3)-N-15.

Original languageEnglish
Pages (from-to)72-76
Number of pages5
JournalGalactic Center Workshop 2006: From the Center of the Milky Way to Nearby Low-Luminosity Galactic Nuclei
Publication statusPublished - 2006



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