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We present an up-to-date three-dimensional map of the distribution of the neutral gas in the local interstellar medium (LISM) within a few hundred parsecs of the Sun. The map is constructed from more than 500 interstellar N$_{H}$ absorption measurements towards individual stars, found in the literature. We have included results obtained only from absorption measurements toward individual stars with known distances, in an effort to construct a three-dimensional picture of the LISM neutral gas morphology. Our description of the neutral gas distribution will be particularly useful for planning observations at spectral wavelengths dominated by the neutral hydrogen interstellar absorption, for example those carried out with the Extreme Ultraviolet Explorer satellite, and represent a large database, essential for future models of the LISM.
This research has been supported by NASA contract NAS5-30180.
