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Spatial Variations in the Atomic D/H Ratio in the ISM
Published online by Cambridge University Press: 25 May 2016
Abstract
Observations with IMAPS demonstrate that interstellar atomic D/H abundance ratios differ by a factor of 3 on the sightlines toward Δ Ori A, ζ Pup, and γ2 Vel, early-type stars within ˜ 500 pc of the Sun. The observed D/H differences are not inversely correlated with N/H, as would be expected if injection of CNO-processed material was the primary mechanism for the D/H abundance variations in the ISM.
- Type
- 3. Abundances of D, 3He and 4He
- Information
- Symposium - International Astronomical Union , Volume 198: The Light Elements and their Evolution , 2000 , pp. 242 - 243
- Copyright
- Copyright © Astronomical Society of the Pacific 2000
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