Upper limits on the O2/CO ratio in two dense interstellar clouds

Details Upper limits on the O2/CO ratio in two dense interstellar clouds Upper limits on the O2/CO ratio in two dense interstellar clouds

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...291..178l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 291, April 1, 1985, p. 178-182. Research supported by the Robert A. Welch F

Astronomy and Astrophysics

Astrophysics

38

Carbon Monoxide, Interstellar Chemistry, Molecular Clouds, Oxygen, Abundance, Molecular Energy Levels, Oxygen Spectra

Scientific paper

The authors have searched for a magnetic-dipole rotation transition of the isotope 16O18O toward ρ Oph and Orion A at a wavelength of 1.3 mm. Upper limits on the intensity of this line imply that N(O2)/N(CO) ≤ 0.13 and 0.67 in the two sources, respectively, so that neither harbors a hitherto-undetected reservoir of oxygen in molecular form.

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