A Compilation of Interstellar Column Densities

Astronomy and Astrophysics – Astronomy

Scientific paper

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Dust, Extinction, Ism: Abundances, Ism: Clouds

Scientific paper

We have collated absorption line data toward 3008 stars in order to create a unified database of interstellar column densities. These data have been taken from a number of different published sources and include many different species and ionizations. The preliminary results from our analysis show a tight relation [N(H)/E(B - V) = 6.12 × 1021] between N(H) and E(B - V). Similar plots have been obtained with many different species, and their correlations along with the correlation coefficients are presented.

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