The CO-12/CO-13 abundance ratio toward Zeta Ophiuchi

Details The CO-12/CO-13 abundance ratio toward Zeta Ophiuchi The CO-12/CO-13 abundance ratio toward Zeta Ophiuchi

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...254..100w&link_type=abstract

Astrophysical Journal, Part 1, vol. 254, Mar. 1, 1982, p. 100-107.

Astronomy and Astrophysics

Astronomy

67

Abundance, Carbon Monoxide, Carbon 12, Carbon 13, Interstellar Gas, Ultraviolet Spectra, Absorption Spectra, Iue, Line Spectra, Oao 3, Spaceborne Astronomy

Scientific paper

The CO-12/CO-13 abundance ratio toward Zeta Ophiuchi, and interstellar material physical properties, are determined by means of a system of UV absorption lines gathered by Copernicus and IUE spacecraft observations. The observations imply a low CO isotope ratio, at 55 + or - 11, and a CO-12 column density of 2.4 + or - 0.3 x 10 to the 15th/sq cm. A small velocity dispersion, at 0.46 + or - 0.15 km/sec, is implied by further analysis, along with a kinetic temperature greater than 70 K.

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