Monthly Notices of the Royal Astronomical Society volume 222, issue 1, P143-147 1986 DOI: 10.1093/mnras/222.1.143 View full text
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F. P. Keenan, P. L. Dufton, A. Hibbert, M. J. Murray

Abstract: The variation of the interstellar nitrogen, oxygen and magnesium abundances with mean line-of-sight density {n H) is analysed in terms of a two-component model first employed by Jenkins, Savage & Spitzer, which consists of warm, low-density neutral gas and cold clouds. In all cases the gas-phase abundances have been deduced using reliable oscillator strengths specifically calculated for this purpose. Depletions in the warm and cold gas, denoted Z) w and D c respectively, are derived from non-linear least-squar…

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