activity
19962024
most citedKeck High Resolution Spectroscopy of PKS 0123+257: Intrinsic Absorption in a Radio Loud Quasar

148 citations · 371 across the 7 of their papers we have counts for

collaborators

7 papers

astro-ph.EP2024★ 4 cited

Tidally Heated Sub-Neptunes, Refined Planetary Compositions, and Confirmation of a Third Planet in the TOI-1266 System

Michael Greklek-McKeon, Shreyas Vissapragada, Heather A. Knutson +38

TOI-1266 is a benchmark system of two temperate ( 450 K) sub-Neptune-sized planets orbiting a nearby M dwarf exhibiting a rare inverted architecture with a larger interior plane…

astro-ph2001

High Resolution Spectra of Quasar AALs: 3C 191

Frederick W. Hamann, T. A. Barlow, F. C. Chaffee +2

We discuss new high-resolution (6.7 km/s) spectra of the associated absorption lines (AALs) in the radio-loud quasar 3C 191. The measured AALs have ionizations ranging from Mg I to…

astro-ph2000★ 140 cited

High-Resolution Keck Spectra of the Associated Absorption Lines in 3C 191

Frederick W. Hamann, T. A. Barlow, F. C. Chaffee +2

Associated absorption lines (AALs) are valuable probes of the gaseous environments near quasars. Here we discuss high-resolution (6.7 km/s) spectra of the AALs in the radio-loud qu…

astro-ph1997★ 1 cited

New Statistical Measures of the Lya Forest Spectra for Accurate Comparison to Theoretical Models

J. Miralda-Escude, M. Rauch, W. L. W. Sargent +6

We propose a new method of analysis for the \lya forest, namely to measure the 1-point and 2-point joint probability distribution of the transmitted flux. The results for a sample…

astro-ph1997★ 1 cited

Ionization and Abundances in Intrinsic QSO Absorption-Line Systems

F. Hamann, T. Barlow, R. D. Cohen +2

We discuss two aspects of the ionization and abundances in QSO intrinsic absorbers. First, we use the high-ionization doublet Ne VIII 770,780 to test the relationship between the U…

astro-ph1996★ 148 cited

Keck High Resolution Spectroscopy of PKS 0123+257: Intrinsic Absorption in a Radio Loud Quasar

Thomas A. Barlow, W. L. W. Sargent

We present results from Keck I high resolution spectroscopy of the radio loud quasar PKS 0123+257 (=2.364, V=17.5). In this object we detect Ly, N V 1238,1242, Si IV 1393,1…