Fig. 7 from Interstellar Ca II Line Intensities and the Distances of the OB stars

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Interstellar Ca II Line Intensities and the Distances of the OB stars

Authors: A. Megier, A. Strobel, A. Bondar, F. A. Musaev, Inwoo Han, J. KreŁowski, and G. A. Galazutdinov

Megier et al. 2005 The Astrophysical Journal 634 451.

Caption: Fig. 7.

Equivalent widths of the calcium doublet lines. Note the "step" at ﹩\mathrm{EW}\,( \mathrm{Ca}\,\ {}^{{\rm{\small II}}}\ \mathrm{H}\,) =170﹩ mÅ.