Detection of H/C-17/O plus in Sagittarius B2

Details Detection of H/C-17/O plus in Sagittarius B2 Detection of H/C-17/O plus in Sagittarius B2

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...263l..89g&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 263, Dec. 15, 1982, p. L89-L93.

Astronomy and Astrophysics

Astrophysics

17

Electron Transitions, Emission Spectra, Interstellar Gas, Line Spectra, Molecular Rotation, Oxygen Isotopes, Abundance, Molecular Spectra, Nuclear Fusion, Sagittarius Constellation, Solar System

Scientific paper

Line emission at 87.057 GHz attributed to the J equals 1-0 rotational transition of the formyl ion H(C-17)O plus has been detected in Sgr B2 (OH). Within the errors, the H(C-18)O plus/H(C-17)O plus abundance ratio in Sgr B2 (3.1 plus or minus 0.6) is found to equal the (C-18)O/(C-17)O ratios of 3.2 plus or minus 0.2 and 3.6 plus or minus 0.1 reported by Wannier et al. (1976) and Penzias (1981), and the (O-18)H/(O-17)H ratio (3.5 plus or minus 0.5) reported by Bujarrabal et al. (1983). It is a factor of approximately 1.8 smaller than the solar system O-18/O-17 elemental abundance ratio (5.5).

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