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Further Evidence for Chemical Fractionation from Ultraviolet Observations of Carbon Monoxide
S. R. Federman, David L. Lambert, Yaron Sheffer +4
Ultraviolet absorption from interstellar 12CO and 13CO was detected toward rho Oph A and chi Oph. The measurements were obtained at medium resolution with the Goddard High Resoluti…
The Definitive Abundance of Interstellar Oxygen
David M. Meyer, M. Jura, Jason A. Cardelli
Using the Goddard High Resolution Spectrograph (GHRS) onboard HST, we have obtained high S/N echelle observations of the weak interstellar O I 1356 A absorption toward the stars Ga…
The Abundance of Interstellar Nitrogen
David M. Meyer, Jason A. Cardelli, Ulysses J. Sofia
Using the HST Goddard High Resolution Spectrograph (GHRS), we have obtained high S/N echelle observations of the weak interstellar N I 1160, 1161 A absorption doublet toward the st…