Abstract
The GHRS has obtained high-resolution spectra of interstellar gas toward 19 nearby stars. These excellent data show that the Sun is located inside the Local Interstellar Cloud (LIC) with other warm clouds nearby. I will summarize the physical properties of these clouds and the three-dimensional structure of this warm interstellar gas. There is now clear evidence that the Sun and other late-type stars are surrounded by hydrogen walls in the upwind direction. The D/H ratio probably has a constant value in the LIC, (1.6 ± 0.2) × 10−5, consistent with the measured values for all LIC lines of sight.
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Linsky, J.L. GHRS observations of the LISM. Space Sci Rev 78, 157–164 (1996). https://doi.org/10.1007/BF00170802
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DOI: https://doi.org/10.1007/BF00170802