Extended Data Fig. 1: Full Metallicity Measurements.
From: Diverse metallicities of Fermi bubble clouds indicate dual origins in the disk and halo
Xi represents the UV-detected ion used for metallicity calculations and v0 UV is the FB HVCs’ LSR velocity centroid for that ion. The ion absorption and H i emission, log \({N}_{{{{{\rm{X}}}}}^{i}}\). and NHI, respectively, are listed with the H i column errors including beam smearing added in quadrature when available. We also list the ion abundances, [Xi/H]. The ionization correction, IC, calculations are discussed throughout the Methods section. [X/H] is the corrected gas-phase elemental abundance and does not account for dust depletion. We include an O i solar abundance for M5-ZNG1’s elemental abundance measurement that is updated from that in the literature33,54. For a discussion of the multiple H i measurements for J1919-2958, see the Methods Section. For a discussion of dust depletion and the multiple H i measurements for J1938-4326, see Supplementary Information Section 1.