Publications (65)
The Composite Spectrum of BOSS Quasars Selected for Studies of the Lyman-alpha Forest
David W. Harris, Trey W. Jensen, Nao Suzuki +12
Extreme-Velocity Quasar Outflows and the Role of X-ray Shielding
Fred Hamann, George Chartas, Sean McGraw +5
Extremely Red Quasars from SDSS, BOSS and WISE: Classification of Optical Spectra
Nicholas P. Ross, Fred Hamann, Nadia L. Zakamska +10
The Physics and Physical Properties of Quasar Outflows
Fred Hamann, Daniel Capellupo, George Chartas +5
Inhomogeneous Absorbers and Derived Column Densities
Bassem M. Sabra, Fred Hamann
Implications of Quasar Black Hole Masses at High Redshifts
Matthias Dietrich, Fred Hamann
Emission-Line Properties of z > 4 Quasars
Anca Constantin, Joseph C. Shields, Fred Hamann +2
Host galaxies of double-peaked [OIII] emitting AGN: binary AGN or mergers?
Carolin Villforth, Fred Hamann
The Metallicity of the Redshift 4.16 Quasar BR2248-1242
Craig Warner, Fred Hamann, Joseph C. Shields +3
The Sloan Digital Sky Survey quasar catalog: tenth data release
Isabelle Pâris, Patrick Petitjean, Ãric Aubourg +47
Heavy Elements in QSOs: Star Formation and Galaxy Evolution at High Redshifts
Fred Hamann
Winds as the origin of radio emission in $z=2.5$ radio-quiet extremely red quasars
Hsiang-Chih Hwang, Nadia L. Zakamska, Rachael M. Alexandroff +4
Metallicity and Far-Infrared Luminosity of High Redshift Quasars
Leah E. Simon, Fred Hamann
A Relation Between Supermassive Black Hole Mass and Quasar Metallicity?
Craig Warner, Fred Hamann, Matthias Dietrich
On the origins of C IV absorption profile diversity in broad absorption line quasars
Alexei Baskin, Ari Laor, Fred Hamann
Narrow UV Absorption Line Outflows from Quasars
Fred Hamann, Leah Simon, Paola Rodriguez Hidalgo +1
Discovery of the Transition of a Mini-Broad Absorption Line into Broad Absorption in the SDSS Quasar J115122.14+020426.3
Paola RodrÃguez Hidalgo, Michael Eracleous, Jane Charlton +3
The Extreme High-Velocity Outflow in Quasar PG0935+417
Paola RodrÃguez Hidalgo, Fred Hamann, Patrick Hall
Broad P V Absorption in the BALQSO, PG 1254+047: Column Densities, Ionizations and Metal Abundances in BAL Winds
Fred Hamann
The Diverse Nature of Intrinsic Absorbers in AGNs
Fred Hamann, Bassem Sabra
The Sloan Digital Sky Survey Quasar Catalog: twelfth data release
Isabelle Pâris, Patrick Petitjean, Nicholas P. Ross +43
Elemental Abundances in QSOs: Star Formation and Galactic Nuclear Evolution at High Redshifts
Fred Hamann, Gary Ferland
Discovery of extreme [OIII]5007A outflows in high-redshift red quasars
Nadia L. Zakamska, Fred Hamann, Isabelle Pâris +7
Host galaxies of high-redshift extremely red and obscured quasars
Nadia L. Zakamska, Ai-Lei Sun, Michael A. Strauss +9
Variability in Quasar Broad Absorption Line Outflows III. What Happens on the Shortest Time-scales?
Daniel M. Capellupo, Fred Hamann, Joseph C. Shields +2
Morphologies of low-redshift AGN host galaxies: what role does AGN luminosity play?
Carolin Villforth, Fred Hamann, Anton Koekemoer +7
The average absorption properties of broad absorption line quasars at 800 < lambda_rest < 3000 Ã , and the underlying physical parameters
Alexei Baskin, Ari Laor, Fred Hamann
Variability in Quasar Broad Absorption Line Outflows
Daniel M. Capellupo, Fred Hamann, Joseph C. Shields +3
Variability Tests for Intrinsic Absorption Lines in Quasar Spectra
Desika Narayanan, Fred Hamann, Tom Barlow +4
Resolving the X-ray obscuration in a low flux observation of the quasar PDS 456
James Reeves, Valentina Braito, Emanuele Nardini +5
Unshifted Metastable He I* Mini-Broad Absorption Line System in the Narrow Line Type 1 Quasar SDSS J080248.18$+$551328.9
Tuo Ji, Hongyan Zhou, Peng Jiang +11
Extremely Red Quasars in BOSS
Fred Hamann, Nadia L. Zakamska, Nicholas Ross +11
Quasar Metal Abundances and Host Galaxy Evolution
Fred Hamann, Craig Warner, Matthias Dietrich +1
On time variability and other complications in studying the UV broad absorption lines of quasars: results from numerical simulations of radiation driven disk winds
Daniel Proga, Paola RodrÃguez Hidalgo, Fred Hamann
High Redshift Quasars and Star Formation History
Matthias Dietrich, Fred Hamann
The Gaseous Environments of Quasars: Associate Absorption Lines with Density and Distance Constraints
Chen Chen, Fred Hamann, Leah Simon +1
Variability in Quasar Broad Absorption Line Outflows I. Trends in the Short-Term versus Long-Term Data
Daniel M. Capellupo, Fred Hamann, Joseph C. Shields +2
Broad NeVIII 774 Emission From Quasars
Fred Hamann, Ross D. Cohen, Joseph Shields +3
Spectropolarimetry of High Redshift Obscured and Red Quasars
Rachael M. Alexandroff, Nadia L. Zakamska, Aaron J. Barth +6
On the Emergence of Thousands of Absorption Lines in the Quasar PG1411+442: A Clumpy High-Column Density Outflow from the Broad Emission-Line Region?
Fred Hamann, Todd M. Tripp, David Rupke +1
Active Galactic Nuclei Emission-Line Properties Versus Eddington Ratio
Craig Warner, Fred Hamann, Matthias Dietrich
Candidate Type II Quasars at 2 < z < 4.3 in the Sloan Digital Sky Survey III
Rachael Alexandroff, Michael A. Strauss, Jenny E. Greene +12
The Nature of the UV/X-Ray Absorber in PG 2302+029
Bassem M. Sabra, Fred Hamann, Buell T. Jannuzi +2
The Sloan Digital Sky Survey quasar catalog: ninth data release
Isabelle Pâris, Patrick Petitjean, Eric Aubourg +73
The Nature and Origin of z_a~z_e Absorption Lines in the Redshift 0.20 Quasar, PKS 2135-147
Fred Hamann, E. A. Beaver, Ross D. Cohen +3
Herschel-PACS observations of [OI]63um towards submillimetre galaxies at z~1
Kristen Coppin, Alice Danielson, James E. Geach +22
Metallicities and Abundance Ratios from Quasar Broad Emission Lines
Fred Hamann, K. T. Korista, G. J. Ferland +2
Quasars with PV broad absorption in BOSS data release 9
Daniel M. Capellupo, Fred Hamann, Hanna Herbst +7
Variability of Mini-BAL and BAL Outflows in Quasars
Paola Rodriguez Hidalgo, Fred Hamann, Michael Eracleous +3
High redshift extremely red quasars in X-rays
Andy D. Goulding, Nadia L. Zakamska, Rachael M. Alexandroff +11
The Origins of a Rich Absorption Line Complex in a Quasar at Redshift 3.45
Leah E. Simon, Fred Hamann
A compact, metal-rich, kpc-scale outflow in FBQS J0209-0438: Detailed diagnostics from HST/COS extreme UV observations
Charles W. Finn, Simon L. Morris, Neil H. M. Crighton +6
Emergence of a Broad-Absorption-Line Outflow in the Narrow-line Seyfert 1 Galaxy WPVS 007
Karen M. Leighly, Fred Hamann, Darrin A. Casebeer +1
Variability in quasar broad absorption line outflows II. Multi-epoch monitoring of SiIV and CIV BAL variability
Daniel M. Capellupo, Fred Hamann, Joseph C. Shields +2
Intrinsic AGN Absorption Lines
Fred Hamann
High Velocity Outflows in Quasars
Paola Rodriguez Hidalgo, Fred Hamann, Daniel Nestor +1
Chandra Survey of Radio-quiet, High-redshift Quasars
Jill Bechtold, Aneta Siemiginowska, Joseph Shields +6
On the structure and energetics of quasar broad absorption-line outflows
Fred Hamann, Hanna Herbst, Isabelle Paris +1
A Variable PV Broad Absorption Line and Quasar Outflow Energetics
Daniel M. Capellupo, Fred Hamann, Tom A. Barlow
Metal Abundances and Ionization in QSO Intrinsic Absorbers
Fred Hamann
Probing the High-Redshift Universe with Quasar Elemental Abundances
Fred Hamann
Does the X-ray outflow quasar PDS 456 have a UV outflow at 0.3c?
Fred Hamann, George Chartas, James Reeves +1
A Metal-Strong and Dust-Rich Damped \lya Absorption System toward the Quasar SDSS J115705.52+615521.7
Jian-Guo Wang, Hong-Yan Zhou, Jian Ge +7
Eta Carinae -- Physics of the Inner Ejecta
Fred Hamann
PG 1254+047: An Intrinsically X-ray Weak, Heavily Absorbed BALQSO?
Bassem M. Sabra, Fred Hamann