The spectrophotometry and chemical composition of the oxygen-poor bipolar nebula NGC 6164-5

Details The spectrophotometry and chemical composition of the oxygen-poor bipolar nebula NGC 6164-5 The spectrophotometry and chemical composition of the oxygen-poor bipolar nebula NGC 6164-5

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...327..859d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 327, April 15, 1988, p. 859-869.

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Abundance, Chemical Composition, Early Stars, H Ii Regions, Planetary Nebulae, Ultraviolet Spectroscopy, Computational Chemistry, Emission Spectra, Line Spectra, Nuclear Fusion, O Stars

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The paper presents new ground-based and IUE spectrophotometry of several positions in NGC 6164-5 surrounding the Population I Of star HD 148937. Electron temperatures, densities, and abundances are derived for the various positions in the nebula using spectral line information. For all of the regions observed, Ne/H is depleted by an amount comparable to O/H, while S/H and Ar/H have normal values. The results suggest that the nebula consists partly of material ejected from inner shell-burning regions of the Of star. In effect, HD 148937 is older and more advanced than what was previously thought.

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