Publications (73)
The High Velocity Gas toward Messier 5: Tracing Feedback Flows in the Inner Galaxy
William F. Zech, Nicolas Lehner, J. Christopher Howk +2
Project Lyman: Quantifying 11 Gyrs of Metagalactic Ionizing Background Evolution
Stephan R. McCandliss, B-G Andersson, Nils Bergvall +23
The COS Absorption Survey of Baryon Harbors (CASBaH): Warm-hot Circumgalactic Gas Reservoirs Traced by Ne VIII Absorption
Joseph N. Burchett, Todd M. Tripp, J. Xavier Prochaska +13
The Ucsd/Keck Damped Lya Abundance Database: A Decade of High Resolution Spectroscopy
Jason X. Prochaska, Arthur M. Wolfe, J. Christopher Howk +3
The Multiphase Halo of NGC 891: WIYN H-alpha and BVI Imaging
J. Christopher Howk, Blair D. Savage
The UCSD Radio-Selected Quasar Survey for Damped Lyman alpha System
Regina A. Jorgenson, Arthur M. Wolfe, Jason X. Prochaska +5
Far Ultraviolet Spectroscopic Explorer Observations of a Supernova Remnant in the Line of Sight to HD 5980 in the Small Magellanic Cloud
Charles G. Hoopes, Kenneth R. Sembach, J. Christopher Howk +1
A Search for Extraplanar Dust in Nearby Edge-On Spirals
J. Christopher Howk, Blair D. Savage
Extraplanar Dust in Spiral Galaxies: Tracing Outflows in the Disk-Halo Interface
J. Christopher Howk
Dust in the Ionized Medium of the Galaxy: GHRS Measurements of Al III and S III
J. Christopher Howk, Blair D. Savage
Empirical Verification of the Fe II Oscillator Strengths in the FUSE Bandpass
J. Christopher Howk, Kenneth R. Sembach, Katherine C. Roth +1
Ionization Properties and Elemental Abundances in Damped Ly alpha Systems
Giovanni Vladilo, Miriam Centurion, Piercarlo Bonifacio +1
Strong z~0.5 O VI Absorption Toward PKS 0405-123: Implications for Ionization and Metallicity of the Cosmic Web
J. Christopher Howk, Joseph S. Ribaudo, Nicolas Lehner +2
Ionized Gas in Damped Lyman-alpha Systems and Its Effects on Elemental Abundance Studies
J. Christopher Howk, Kenneth R. Sembach
New Gapless COS G140L Mode Proposed for Background-Limited Far-UV Observations
Keith Redwine, Stephan R. McCandliss, Brian Fleming +6
Galactic and Circumgalactic OVI and its Impact on the Cosmological Metal and Baryon Budgets at 2<z<3.5
Nicolas Lehner, John M. O'Meara, Andrew J. Fox +4
Simulations of Mixed Morphology Supernova Remnants With Anisotropic Thermal Conduction
David A. Tilley, Dinshaw S. Balsara, J. Christopher Howk
Background and Scattered Light Subtraction in the High-Resolution Echelle Modes of the Space Telescope Imaging Spectrograph
J. Christopher Howk, Kenneth R. Sembach
Extraplanar Dust: a Tracer of Cold Dense Gas in the Thick Disks of Spiral Galaxies
J. Christopher Howk
Figuring Out Gas & Galaxies in Enzo (FOGGIE). I. Resolving Simulated Circumgalactic Absorption at 2 < z < 2.5
Molly S. Peeples, Lauren Corlies, Jason Tumlinson +7
Extraplanar Dust in Spiral Galaxies: Observations and Implications
J. Christopher Howk
Probing the IGM/Galaxy Connection Toward PKS0405-123 I: UV Spectroscopy and Metal-Line Systems
Jason X. Prochaska, Hsiao-Wen Chen, J. Christopher Howk +2
The Global Content, Distribution, and Kinematics of Interstellar O VI in the Large Magellanic Cloud
J. Christopher Howk, Kenneth R. Sembach, Blair D. Savage +3
Low-metallicity Absorbers Account for Half of the Dense Circumgalactic Gas at z < 1
Christopher B. Wotta, Nicolas Lehner, J. Christopher Howk +2
Modeling the Warm Ionized Interstellar Medium and Its Impact on Elemental Abundance Studies
Kenneth R. Sembach, J. Christopher Howk, Robert S. I. Ryans +1
Extraplanar H II Regions in Spiral Galaxies. I. Low-Metallicity Gas Accreting through the Disk-Halo Interface of NGC 4013
J. Christopher Howk, Katherine M. Rueff, Nicolas Lehner +3
Evidence for Cold Accretion: Primitive Gas Flowing onto a Galaxy at z~0.274
Joseph Ribaudo, Nicolas Lehner, J. Christopher Howk +5
Evidence for Correlated Titanium and Deuterium Depletion in the Galactic ISM
Jason X. Prochaska, Todd M. Tripp, J. Christopher Howk
The COS/UVES Absorption Survey of the Magellanic Stream: II. Evidence for a complex enrichment history of the Stream from the Fairall 9 sightline
Philipp Richter, Andrew J. Fox, Bart P. Wakker +5
Extraplanar H II Regions in Spiral Galaxies. II. In Situ Star Formation in the Interstellar Thick Disk of NGC 4013
J. Christopher Howk, Katherine M. Rueff, Nicolas Lehner +3
The COS/UVES Absorption Survey of the Magellanic Stream: I. One-Tenth Solar Abundances along the Body of the Stream
Andrew J. Fox, Philipp Richter, Bart P. Wakker +5
A Method for Deriving Accurate Gas-Phase Abundances for the Multiphase Interstellar Galactic Halo
J. Christopher Howk, Kenneth R. Sembach, Blair D. Savage
Understanding the circumgalactic medium is critical for understanding galaxy evolution
Molly S. Peeples, Peter Behroozi, Rongmon Bordoloi +69
The UCSD HIRES/KeckI Damped Lya Abundance Database III. An Empirical Study of Photoionization in the Damped Lya System Toward GB1759+7539
Jason X. Prochaska, J. Christopher Howk, John M. O'Meara +5
Cooling in Coronal Gas in the M82 Starburst Superwind
Charles G. Hoopes, Timothy M. Heckman, David K. Strickland +1
On the Origin of the High-Ionization Intermediate-Velocity Gas Toward HD 14434
David C. Knauth, J. Christopher Howk, Kenneth R. Sembach +2
Following the Metals in the Intergalactic and Circumgalactic Medium over Cosmic Time
Nicolas Lehner, Joseph N. Burchett, J. Christopher Howk +5
Elemental Abundances in Two High Column Density Damped Lyman Alpha Systems at z < 1.5
Sandhya M. Rao, Jason X. Prochaska, J. Christopher Howk +1
A FUSE Survey of Interstellar O VI Absorption in the Small Magellanic Cloud
Charles G. Hoopes, Kenneth R. Sembach, J. Christopher Howk +2
Observation of interstellar lithium in the low-metallicity Small Magellanic Cloud
J. Christopher Howk, Nicolas Lehner, Brian D. Fields +1
Interstellar O VI in the Large Magellanic Cloud
J. Christopher Howk
Ionized Gas in the First 10 Kiloparsecs of the Interstellar Galactic Halo: Metal Ion Fractions
J. Christopher Howk, S. Michelle Consiglio
Origins of the Highly Ionized Gas along the Line of Sight towards HD 116852
Andrew J. Fox, Blair D. Savage, Kenneth R. Sembach +5
Finding the UV-Visible Path Forward: Proceedings of the Community Workshop to Plan the Future of UV/Visible Space Astrophysics
Paul A. Scowen, Todd Tripp, Matt Beasley +30
The HI Content of the Universe over the Past 10 Gyrs
Marcel Neeleman, J. Xavier Prochaska, Joseph Ribaudo +4
The Abundance of Interstellar Boron
J. Christopher Howk, Kenneth R. Sembach, Blair D. Savage
Interstellar Deuterium, Nitrogen, and Oxygen Abundances Toward GD 246, WD 2331$-$475, HZ 21, and Lan 23: Results from the FUSE Mission
Cristina M. Oliveira, Guillaume Hebrard, J. Christopher Howk +3
Cold Neutral Gas in a z=4.2 Damped Lyman-alpha System: The Fuel for Star Formation
J. Christopher Howk, Arthur M. Wolfe, Jason X. Prochaska
FUSE Observations of Atomic Abundances and Molecular Hydrogen in the Leading Arm of the Magellanic Stream
Kenneth. R. Sembach, J. Christopher Howk, Blair. D. Savage +1
Detection of Interstellar C_2 and C_3 in the Small Magellanic Cloud
Daniel E. Welty, J. Christopher Howk, Nicolas Lehner +1
An Atlas of FUSE Sight Lines Toward the Magellanic Clouds
Charles W. Danforth, J. Christopher Howk, Alex W. Fullerton +2
Abundances and Physical Conditions in the Warm Neutral Medium Towards mu Columbae
J. Christopher Howk, Blair D. Savage, Dirk Fabian
The COS/UVES Absorption Survey of the Magellanic Stream. III: Ionization, Total Mass, and Inflow Rate onto the Milky Way
Andrew J. Fox, Bart P. Wakker, Kathleen A. Barger +14
The Second Data Release of the KODIAQ Survey
John M. O'Meara, Nicolas Lehner, J. Christopher Howk +5
Ionized Gas in the First 10 kpc of the Interstellar Galactic Halo
J. Christopher Howk, Kenneth R. Sembach, Blair D. Savage
A Hubble Space Telescope Study of Lyman Limit Systems: Census and Evolution
Joseph Ribaudo, Nicolas Lehner, J. Christopher Howk
Project AMIGA: A Minimal Covering Factor for Optically Thick Circumgalactic Gas Around the Andromeda Galaxy
J. Christopher Howk, Christopher B. Wotta, Michelle A. Berg +19
The Cosmic Evolution of the Metallicity Distribution of Ionized Gas Traced by Lyman Limit Systems
Nicolas Lehner, John M. O'Meara, J. Christopher Howk +2
The COS CGM Compendium. II: Metallicities of the Partial and Lyman Limit Systems at z<1
Christopher B. Wotta, Nicolas Lehner, J. Christopher Howk +3
The High-Ion Content and Kinematics of Low-Redshift Lyman Limit Systems
Andrew J. Fox, Nicolas Lehner, Jason Tumlinson +9
The Hidden Mass and Large Spatial Extent of a Poststarburst Galaxy Outflow
Todd M. Tripp, Joseph D. Meiring, J. Xavier Prochaska +9
QSO Absorption Systems Detected in Ne VIII: High-Metallicity Clouds with a Large Effective Cross Section
Joseph D. Meiring, Todd M. Tripp, Jessica K. Werk +5
A Reservoir of Ionized Gas in the Galactic Halo to Sustain Star Formation in the Milky Way
Nicolas Lehner, J. Christopher Howk
The Interstellar Medium and Star Formation in Edge-On Galaxies. I. NGC 891
Kijeong Yim, Tony Wong, J. Christopher Howk +1
Wavelength Accuracy of the Keck HIRES Spectrograph and Measuring Changes in the Fine Structure Constant
Kim Griest, Jonathan B. Whitmore, Arthur M. Wolfe +3
Chemical Abundances in the Leading Arm of the Magellanic Stream
Andrew J. Fox, Kathleen A. Barger, Bart P. Wakker +8
A Deep Search for Faint Galaxies Associated with Very Low-Redshift C IV Absorbers: A Case with Cold-Accretion Characteristics
Joseph N. Burchett, Todd M. Tripp, Jessica K. Werk +4
Extraplanar Dust in the Edge-On Spiral NGC 891
J. Christopher Howk, Blair D. Savage
Stagnation and Infall of Dense Clumps in the Stellar Wind of tau Scorpii
J. Christopher Howk, Joseph Cassinelli, Jon Bjorkman +1
FUSE Observations of Degree-Scale Variations in Galactic Halo O VI
J. Christopher Howk, Blair D. Savage, Kenneth R. Sembach +1
The COS CGM Compendium (CCC). I: Survey Design and Initial Results
Nicolas Lehner, Christopher B. Wotta, J. Christopher Howk +3
Extraplanar Dust and Star Formation in Nearby Edge-On Galaxies
J. Christopher Howk, Blair D. Savage
The Relationship Between the Dense Neutral and Diffuse Ionized Gas in the Thick Disks of Two Edge-On Spiral Galaxies
Katherine M. Rueff, J. Christopher Howk, Marissa Pitterle +3