FUSE Observations of the HD Molecule toward HD 73882

Details FUSE Observations of the HD Molecule toward HD 73882 FUSE Observations of the HD Molecule toward HD 73882

2000-06-02

arxiv.org/abs/astro-ph/0006039v1

ApJ 538 (2000) L69

Astronomy and Astrophysics

Astrophysics

4 pages + 4 .ps figures. This paper will appear in a special issue of Astrophysical Journal Letters devoted to the first scien

Scientific paper

10.1086/312799

The Lyman and Werner band systems of deuterated molecular hydrogen (HD) occur in the far UV range below 1200 A. The high sensitivity of the FUSE mission can give access, at moderate resolution, to hot stars shining through translucent clouds, in the hope of observing molecular cores in which deuterium is essentially in the form of HD. Thus, the measurement of the HD/H2 ratio may become a new powerful tool to evaluate the deuterium abundance, D/H, in the interstellar medium. We report here on the detection of HD toward the high extinction star HD 73882 [E(B-V)=0.72]. A preliminary analysis is presented.

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