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Deuterium observation in our Galaxy - View B

Published online by Cambridge University Press:  25 May 2016

Alfred Vidal-Madjar
Alfred Vidal-Madjar*
Affiliation:
Institut d'Astrophysique de Paris, 98bis Boulevard Arago, F-75014 Paris, FRANCE

Abstract

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Galactic D/H evaluations from observations completed in the far UV with first the Copernicus satellite then followed by IUE and the GHRS on the HST studies already suggest that D/H variations may be present in the interstellar medium. More recent IMAPS (the Interstellar Medium Absorption Profile Spectrograph) observations confirm that conclusion while new STIS (which replaced the GHRS on board HST) studies seem to indicate the contrary. The situation is discussed here.

Hopefully FUSE (the Far Ultraviolet Spectroscopic Explorer, launched the 24th of June 1999) will give access to the D/H ratio in many different galactic sites. This will help us reach a better global view of the evolution of that key element, and thus better constrain any evaluation of its primordial abundance.

Type
3. Abundances of D, 3He and 4He
Information
Symposium - International Astronomical Union , Volume 198: The Light Elements and their Evolution , 2000 , pp. 151 - 160
Copyright
Copyright © Astronomical Society of the Pacific 2000 

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