2 citations · 4 across the 5 of their papers we have counts for
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Probing the High-Redshift Universe with Quasar Elemental Abundances
Fred Hamann
The heavy elements near QSOs provide unique measures of the star formation and chemical evolution in young galactic nuclei or pre-galactic condensations. Studies of quasar abundanc…
Preliminary Analysis of STIS-HST Spectra of Compact Ejecta from Eta Carinae
F. Hamann, K. Davidson, K. Ishibashi +1
We describe some preliminary results from spatially-resolved spectroscopy of the compact ejection knots B and D in the Eta Carinae wind. We emphasize various line diagnostics of th…
Heavy Elements in QSOs: Star Formation and Galaxy Evolution at High Redshifts
Fred Hamann
Intrinsic emission and absorption lines of QSOs provide several independent probes of the metal abundances in QSO environments. They indicate that the metallicities are typically s…
Elemental Abundances from Intrinsic QSO Emission and Absorption Lines
F. Hamann
Several studies have shown that the column densities inferred from broad absorption lines (BALs) require extremely high metallicities and phosphorus overabundances -- apparently in…