468 citations · 2.1k across the 14 of their papers we have counts for
15 papers
The MASSIVE Survey II: Stellar Population Trends Out to Large Radius in Massive Early Type Galaxies
Jenny E. Greene, Ryan Janish, Chung-Pei Ma +4
We examine stellar population gradients in ~100 massive early type galaxies spanning 180 < sigma* < 370 km/s and M_K of -22.5 to -26.5 mag, observed as part of the MASSIVE survey (…
The MASSIVE Survey - I. A Volume-Limited Integral-Field Spectroscopic Study of the Most Massive Early-Type Galaxies within 108 Mpc
Chung-Pei Ma, Jenny E. Greene, Nicholas McConnell +4
Massive early-type galaxies represent the modern-day remnants of the earliest major star formation episodes in the history of the universe. These galaxies are central to our unders…
Dwarf Galaxy Dark Matter Density Profiles Inferred from Stellar and Gas Kinematics
Joshua J. Adams, Joshua D. Simon, Maximilian H. Fabricius +9
We present new constraints on the density profiles of dark matter (DM) halos in seven nearby dwarf galaxies from measurements of their integrated stellar light and gas kinematics.…
The Stellar Haloes of Massive Elliptical Galaxies III: Kinematics at Large Radius
Sudhir Raskutti, Jenny Greene, Jeremy Murphy
We present a 2D kinematic analysis out to ~2-5 effective radii (Re) of 33 massive elliptical galaxies with stellar velocity dispersions larger than 150 km/s. Our observations were…
The Rising Stellar Velocity Dispersion of M87 from Integrated Starlight
Jeremy D. Murphy, Karl Gebhardt, Mason Cradit
We have measured the line-of-sight velocity distribution from integrated stellar light at two points in the outer halo of M87 (NGC 4486), the second-rank galaxy in the Virgo Cluste…
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…
The Influence of Motion and Stress on Optical Fibers
Jeremy D. Murphy, Gary J. Hill, Phillip J. MacQueen +13
We report on extensive testing carried out on the optical fibers for the VIRUS instrument. The primary result of this work explores how 10+ years of simulated wear on a VIRUS fiber…
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…