87 citations · 105 across the 4 of their papers we have counts for
4 papers
On the Oxygen Abundance of Neutral Gas in I Zw 18
Max Pettini, Keith Lipman
Whether the H II regions of dwarf emission-line galaxies are self-polluted by the nucleosynthetic products of massive stars remains an open question, despite recent claims to the c…
Element Abundances at High Redshifts: The N/O Ratio in a Primeval Galaxy
Max Pettini, Keith Lipman, Richard W. Hunstead
The damped Lyman alpha systems seen in the spectra of high redshift QSOs offer the means to determine element abundances in galaxies observed while still at an early stage of evolu…
Element Abundances at High Redshifts: The N/O Ratio at Low Metallicity
K Lipman, M Pettini, R Hunstead
Our knowledge of galactic chemical evolution is currently limited to observations of Milky Way stars and H II regions of nearby galaxies. Damped Lyman~ systems offer a new appro…
Interstellar Titanium in the Galactic Halo
Keith Lipman, Max Pettini
We present observations of Ti~II~ absorption towards 15 distant stars in the Galactic halo and the Magellanic Clouds. These new data extend existing surveys of the distribut…