Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-09-12
Astrophys.J. 586 (2003) 1120-1126
Astronomy and Astrophysics
Astrophysics
21 pages, 9 figures, 5 equations, matches final version (minor changes) to appear in ApJ, v586, n2, April 1, 2003
Scientific paper
10.1086/367696
The first observations of deuterium and oxygen in the Local Interstellar Medium (LISM) obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) can be used to search for local abundance variations. While the very limited sample of these first data may be consistent with no variations, they do offer a hint of anti-correlated variations between D/H and O/H. If confirmed by more data (which will require independently determined, accurate HI column densities), these hints suggest that observations of interstellar gas within a few kpc of the solar neighborhood will reveal clear signs of the evolution of the abundance of deuterium from there and then (the Big Bang), to here and now (the Local Interstellar Medium of the Galaxy).
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