Other
Scientific paper
Nov 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apjs...50..169c&link_type=abstract
Astrophysical Journal Supplement Series, vol. 50, Oct. 1982, p. 169-198. Research supported by Smith College, Smithsonian Insti
Other
67
Abundance, Early Stars, Interstellar Matter, Molecular Clouds, Potassium, Electron Density (Concentration), Hydrogen, K Lines, Line Spectra, Tables (Data)
Scientific paper
Observations of interstellar absorption in the resonance doublet 7664, 7698 A of neutral potassium toward 188 early-type stars at a spectral resolution of 8 km/s are reported. The 7664 A line is successfully separated from nearly coincident telluric O2 absorption for all but a few of the 165 stars for which K I absorption is detected, making possible an abundance analysis by the doublet ratio method. The relationships between the potassium abundances and other atomic abundances, the abundance of molecular hydrogen, and interstellar reddening are investigated.
Chaffee Frederic H. Jr.
White Raymond E.
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