Hostname: page-component-7c8c6479df-p566r Total loading time: 0 Render date: 2024-03-28T11:50:57.821Z Has data issue: false hasContentIssue false

Spatial Variations in the Atomic D/H Ratio in the ISM

Published online by Cambridge University Press:  25 May 2016

G. Sonneborn
Affiliation:
NASA/Goddard Space Flight Center, Code 681, Greenbelt MD 20771 USA
E. B. Jenkins
Affiliation:
Princeton University Observatory, Princeton, NJ 08544) USA
T. Tripp
Affiliation:
Princeton University Observatory, Princeton, NJ 08544) USA
P. Wozniak
Affiliation:
Princeton University Observatory, Princeton, NJ 08544) USA
R. Ferlet
Affiliation:
IAP/CNRS, 98bis Blvd. Arago, 75014 Paris, France
A. Vidal-Madjar
Affiliation:
IAP/CNRS, 98bis Blvd. Arago, 75014 Paris, France
U.J. Sofia
Affiliation:
Dept. of Astronomy, Whitman College, Walla Walla, WA 99362, USA

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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
Copyright
Copyright © Astronomical Society of the Pacific 2000 

References

Jenkins, E. B., et al. (1996), Ap&SS, 239, 315 Google Scholar
Jenkins, E. B., et al. (1999), ApJ, 520, 182 Google Scholar
Meyer, D. M. Jura, M., & Cardelli, J. A. 1998, ApJ, 493, 222 Google Scholar
Piskunov, N. et al. (1997), ApJ, 474, 315 Google Scholar
Sonneborn, G., et al. (2000), ApJ, in press Google Scholar