1.5k citations · 2.1k across the 8 of their papers we have counts for
8 papers
The HETDEX Survey: Probing neutral hydrogen in the circumgalactic medium of ~88,000 Lyman Alpha Emitters
Mahan Mirza Khanlari, Karl Gebhardt, Laurel H. Weiss +12
We explore the neutral hydrogen (H I) gas around 1.9 < z < 3.5 Lyman Alpha Emitters (LAEs) from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) using faint Ly absorpt…
Constraining Cosmology with Big Data Statistics of Cosmological Graphs
Sungryong Hong, Donghui Jeong, Ho Seong Hwang +7
By utilizing large-scale graph analytic tools implemented in the modern Big Data platform, Apache Spark, we investigate the topological structure of gravitational clustering in fiv…
Hydrostatic Gas Constraints on Supermassive Black Hole Masses: Implications for Hydrostatic Equilibrium and Dynamical Modelling in a Sample of Early-Type Galaxies
Philip J. Humphrey, David A. Buote, Fabrizio Brighenti +2
We present new mass measurements for the supermassive black holes (SMBHs) in the centres of three early-type galaxies. The gas pressure in the surrounding, hot interstellar medium…
The M-sigma and M-L Relations in Galactic Bulges and Determinations of their Intrinsic Scatter
Kayhan Gultekin, Douglas O. Richstone, Karl Gebhardt +13
We derive improved versions of the relations between supermassive black hole mass (M_BH) and host-galaxy bulge velocity dispersion (sigma) and luminosity (L) (the M-sigma and M-L r…
Gemini and Hubble Space Telescope Evidence for an Intermediate Mass Black Hole in omega Centauri
Eva Noyola, Karl Gebhardt, Marcel Bergmann
The globular cluster omega Centauri is one of the largest and most massive members of the galactic system. However, its classification as a globular cluster has been challenged mak…
Weighing the Quiescent Central Black Hole in an Elliptical Galaxy with X-ray Emitting Gas
Philip J. Humphrey, David A. Buote, Fabrizio Brighenti +2
We present a Chandra study of the hot ISM in the giant elliptical galaxy NGC4649. In common with other group-centred ellipticals, its temperature profile rises with radius in the o…