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

DOI

19

Citations

0

References

1988

Year

R. J. Dufour, Robert A. Parker, K. G. Henize
The Astrophysical Journal

Abstract

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.