A three-position spectral line survey of Sagittarius B2 between 218 and 263 GHz. I. The observational data

A. Nummelin, P. Bergman, A. Hjalmarson, P. Friberg, W.M. Irvine, TJ Millar, M. Ohishi, S. Saito

Research output: Contribution to journalArticle

97 Citations (Scopus)

Abstract

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 molecular 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 unidentified lines are 337, 51, and eight. Toward the N source, spectral line emission constitutes 22% of the total detected flux in the observed band, and complex organic molecules are the main contributors. Toward 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 tables of suggested line identifications.
Original languageEnglish
Pages (from-to)427-529
Number of pages103
JournalAstrophysical Journal Supplement Series
Volume117
Issue number2
Publication statusPublished - Aug 1998

ASJC Scopus subject areas

  • Space and Planetary Science

Fingerprint Dive into the research topics of 'A three-position spectral line survey of Sagittarius B2 between 218 and 263 GHz. I. The observational data'. Together they form a unique fingerprint.

Cite this