A. Nummelin et al., A 3-POSITION SPECTRAL-LINE SURVEY OF SAGITTARIUS B2 BETWEEN 218 AND 263 GHZ - I - THE OBSERVATIONAL DATA, The Astrophysical journal. Supplement series, 117(2), 1998, pp. 427-529
We have surveyed the frequency band 218.30-263.55 GHz toward the core
positions N and M and the quiescent cloud position NW in the Sgr B2 mo
lecular cloud using the Swedish-ESO Submillimetre Telescope. In total
1730, 660, and 110 lines were detected in N, M, and NW, respectively,
and 42 different molecular species were identified. The number of unid
entified lines are 337, 51, and eight. Toward the N source, spectral l
ine emission constitutes 22% of the total detected flux in the observe
d band, and complex organic molecules are the main contributors. Towar
d M, 14% of the broadband flux is caused by lines, and SO2 is here the
dominant source of emission. NW is relatively poor in spectral lines
and continuum. In this paper we present the spectra together with tabl
es of suggested line identifications.