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The Stellar Halos of Massive Elliptical Galaxies II: Detailed Abundance Ratios at Large Radius
Jenny E Greene, Jeremy D Murphy, Genevieve J Graves +4
We study the radial dependence in stellar populations of 33 nearby early-type galaxies with central stellar velocity dispersions sigma* > 150 km/s. We measure stellar population pr…
Dynamical Measurements of Black Hole Masses in Four Brightest Cluster Galaxies at 100 Mpc
Nicholas J. McConnell, Chung-Pei Ma, Jeremy D. Murphy +5
We present stellar kinematics and orbit superposition models for the central regions of four Brightest Cluster Galaxies (BCGs), based upon integral-field spectroscopy at Gemini, Ke…
The Stellar Halos of Massive Elliptical Galaxies
Jenny E. Greene, Jeremy D. Murphy, Julia M. Comerford +2
We use the Mitchell Spectrograph (formerly VIRUS-P) on the McDonald Observatory 2.7m Harlan J. Smith Telescope to search for the chemical signatures of massive elliptical galaxy as…
Two ten-billion-solar-mass black holes at the centres of giant elliptical galaxies
Nicholas J. McConnell, Chung-Pei Ma, Karl Gebhardt +5
Observational work conducted over the last few decades indicates that all massive galaxies have supermassive black holes at their centres. Although the luminosities and brightness…
The central dark matter distribution of NGC 2976
Joshua J. Adams, Karl Gebhardt, Guillermo A. Blanc +5
We study the mass distribution in the late-type dwarf galaxy NGC 2976 through stellar kinematics obtained with the VIRUS-P integral-field spectrograph and anisotropic Jeans models…
Galaxy Kinematics with VIRUS-P: The Dark Matter Halo of M87
Jeremy D. Murphy, Karl Gebhardt, Joshua J. Adams
We present 2-D stellar kinematics of M87 out to R = 238" taken with the integral field spectrograph VIRUS-P. We run a large set of axisymmetric, orbit-based dynamical models and fi…
The Black-Hole Mass in M87 from Gemini/NIFS Adaptive Optics Observations
Karl Gebhardt, Joshua Adams, Douglas Richstone +5
We present the stellar kinematics in the central 2" of the luminous elliptical galaxy M87 (NGC 4486), using laser adaptive optics to feed the Gemini telescope integral-field spectr…
The HETDEX Pilot Survey. II. The Evolution of the Ly-alpha Escape Fraction from the UV Slope and Luminosity Function of 1.9<z<3.8 LAEs
Guillermo A. Blanc, Joshua Adams, Karl Gebhardt +17
We study the escape of Ly-alpha photons from Ly-alpha emitting galaxies (LAEs) and the overall galaxy population using a sample of 99 LAEs at 1.9<z<3.8 detected through integral-fi…
HETDEX pilot survey for emission-line galaxies - I. Survey design, performance, and catalog
Joshua J. Adams, Guillermo A. Blanc, Gary J. Hill +23
We present a catalog of emission-line galaxies selected solely by their emission-line fluxes using a wide-field integral field spectrograph. This work is partially motivated as a p…