Fig. 4 from The Deuterium to Hydrogen Abundance Ratio toward a Fourth QSO: HS 0105+1619

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The Deuterium to Hydrogen Abundance Ratio toward a Fourth QSO: HS 0105+1619

Authors: John M. O'Meara, David Tytler, David Kirkman, Nao Suzuki, Jason X. Prochaska, Dan Lubin, and Arthur M. Wolfe

O'Meara et al. 2001 The Astrophysical Journal 552 718.

Provider: AAS Journals

Caption: Fig. 4.

Spectral regions used to measure the H I column density. The upper panel shows the Lyα line, with the core and damping wing regions used in the fit shaded gray. The lower panel shows the absorption near the Lyman limit. Overlayed is the single‐component fit to the hydrogen with a column density of ﹩\mathrm{log}\,N_{\mathrm{H}\,\,{}^{{\rm{\small I}}}}=19.422﹩ cm⁻² from Table 2.

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