219 citations · 1.7k across the 36 of their papers we have counts for
5 papers · 1 filter
The Role of Stellar Feedback in the Dynamics of HII Regions
Laura A. Lopez, Mark R. Krumholz, Alberto D. Bolatto +3
Stellar feedback is often cited as the biggest uncertainty in galaxy formation models today. This uncertainty stems from a dearth of observational constraints as well as the great…
Metal-Poor, Cool Gas in the Circumgalactic Medium of a z = 2.4 Star-Forming Galaxy: Direct Evidence for Cold Accretion?
Neil H. M. Crighton, Joseph F. Hennawi, J. Xavier Prochaska
In our current galaxy formation paradigm, high-redshift galaxies are predominantly fuelled by accretion of cool, metal-poor gas from the intergalactic medium. Hydrodynamical simula…
Precious Metals in SDSS Quasar Spectra II: Tracking the Evolution of Strong, 0.4 < z < 2.3 MgII Absorbers with Thousands of Systems
Eduardo N. Seyffert, Kathy L. Cooksey, Robert A. Simcoe +3
We have performed an analysis of over 34,000 MgII doublets at 0.36 < z < 2.29 in Sloan Digital Sky Survey (SDSS) Data-Release 7 quasar spectra; the catalog, advanced data products,…
An Explanation for the Different X-ray to Optical Column Densities in the Environments of Gamma Ray Bursts: A Progenitor Embedded in a Dense Medium
Yair Krongold, J. Xavier Prochaska
We study the > 10 ratios in the X-ray to optical column densities inferred from afterglow spectra of Gamma Ray Bursts due to gas surrounding their progenitors. We present time-evol…
The Fundamental Plane of Damped Lyman Alpha Systems
Marcel Neeleman, Arthur M. Wolfe, J. Xavier Prochaska +1
Using a sample of 100 H I - selected damped Lyman alpha (DLA) systems, observed with the High Resolution Echelle Spectrometer on the Keck I telescope, we present evidence that the…