272 citations · 616 across the 8 of their papers we have counts for
9 papers · 1 filter
Probing feedback in protogalaxies: Multiphase gas in a DLA at z~2.4
N. Lehner, J. C. Howk, J. X. Prochaska +1
We investigate the physical processes occuring in the multiphase gas of a damped Lyαsystem (DLA). We base our analysis on a high quality Keck HIRES spectrum of the QSO J1211+0422 i…
The High Velocity Gas toward Messier 5: Tracing Feedback Flows in the Inner Galaxy
William F. Zech, Nicolas Lehner, J. Christopher Howk +2
We present Far Ultraviolet Spectroscopic Explorer (FUSE) and Space Telescope Imaging Spectrograph (STIS E140M) observations of the post-asymptotic giant branch star ZNG 1 in the gl…
Metallicity and Physical Conditions in the Magellanic Bridge
N. Lehner, J. C. Howk, F. P. Keenan +1
We present a new analysis of the diffuse gas in the Magellanic Bridge (RA>3h) based on HST/STIS E140M and FUSE spectra of 2 early-type stars lying within the Bridge and a QSO behin…
A High-Resolution Survey of Low-Redshift QSO Absorption Lines: Statistics and Physical Conditions of O VI Absorbers
Todd M. Tripp, Kenneth R. Sembach, David V. Bowen +5
Using high-resolution UV spectra of 16 low-z QSOs, we study the physical conditions and statistics of O VI absorption in the IGM at z < 0.5. We identify 51 intervening (z_{abs} <<…
The Abundance of Deuterium in the Warm Neutral Medium of the Lower Galactic Halo
Blair Savage, Nicolas Lehner, Andrew Fox +2
We use high resolution spectra obtained with FUSE and STIS to obtain interstellar column densities of H I, D I, O I, S II, Fe II and P II toward the QSO HE 0226-4110 ( l = 253.4 de…
Physical Properties, Baryon Content, and Evolution of the LyαForest: New Insights from High Resolution Observations at z < 0.4
N. Lehner, B. D. Savage, P. Richter +3
We present a study of the Lyαforest at z<0.4 from which we conclude that at least 20% of the total baryons in the universe are located in the highly-ionized gas traced by broad Lyα…