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Tracing Inflows and Outflows with Absorption Lines in Circumgalactic Gas
Amanda Brady Ford, Romeel Davé, Benjamin D. Oppenheimer +4
We examine how HI and metal absorption lines within low-redshift galaxy halos trace the dynamical state of circumgalactic gas, using cosmological hydrodynamic simulations that incl…
Torque-Limited Growth of Massive Black Holes in Galaxies Across Cosmic Time
Daniel Anglés-Alcázar, Feryal Özel, Romeel Davé +3
We combine cosmological hydrodynamic simulations with analytic models to evaluate the role of galaxy-scale gravitational torques on the evolution of massive black holes at the cent…
A Preliminary Calibration of the RR Lyrae Period-Luminosity Relation at Mid-Infrared Wavelengths: WISE Data
Barry F. Madore, Douglas Hoffman, Wendy L. Freedman +6
Using time-resolved, mid-infrared data from WISE and geometric parallaxes from HST for four Galactic RR Lyrae variables, we derive the following Population II Period-Luminosity (PL…
The Spectrally Resolved Lyman-alpha Emission of Three Lyman-alpha Selected Field Galaxies at z~2.4 from the HETDEX Pilot Survey
Taylor S. Chonis, Guillermo A. Blanc, Gary J. Hill +11
We present new results on the spectrally resolved Lyman-alpha (LyA) emission of three LyA emitting field galaxies at z~2.4 with high LyA equivalent width (>100 Angstroms) and LyA l…
The Circular Velocity Function of Group Galaxies
Louis E. Abramson, Rik J. Williams, Andrew J. Benson +2
A robust prediction of cosmology is the halo circular velocity function (CVF), a dynamical cousin of the halo mass function. The correspondence between theoretical and…
The Neutral Hydrogen Content of Galaxies in Cosmological Hydrodynamic Simulations
Romeel Davé, Neal Katz, Benjamin D. Oppenheimer +2
We examine the global HI properties of galaxies in quarter-billion particle cosmological simulations using Gadget-2, focusing on how galactic outflows impact HI content. We conside…