A survey of interstellar sulfur abundance and implications for P II oscillator strengths

Details A survey of interstellar sulfur abundance and implications for P II oscillator strengths A survey of interstellar sulfur abundance and implications for P II oscillator strengths

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...308..240h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 308, Sept. 1, 1986, p. 240-245.

Other

22

Abundance, Interstellar Matter, Sulfur, Doppler Effect, Iue, Oao 3, Oscillator Strengths, Ultraviolet Spectra

Scientific paper

A study of interstellar gas-phase S abundance is presented which is based mainly on abundances for 39 sight lines newly derived from recently published Copernicus UV absorption-line measurements and archival IUE data. A trend of increasing depletion with increasing mean H volume density n-bar(H) is evident which is similar to that already established for another volatile element, Cl, but weaker than the dependence of depletion on n-bar(H) exhibited by refractory elements such as Ca, Ti, and Mg. The results confirm that S is not a major constituent of interstellar grains. A comparison of Doppler widths derived for S II and P II in the same sight lines reveals an unexpected systematic discrepancy of a factor of about 1.7.

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