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Primordial Nucleosynthesis and Observed Light Element Abundances

โœ Scribed by B. E. J. PAGEL


Book ID
119866033
Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
481 KB
Volume
647
Category
Article
ISSN
0890-6564

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Observational constraints of light eleme
โœ D.A. Lubowich ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 260 KB

Enhanced deuterium was not detected in the metal-poor halo stars HD 140283, the protoplanetary nebula AFGL 2688, or the Orion nebula. The Galactic Center (GC) deuterium abundance in the 50 km/s molecular cloud is (2.0-10)ร— 10 -6 and less than the local ISM D/H = (0.9-1.7)x10 -5. Thus the GC D result