J. Christopher Howk

Professor

University of Notre Dame

United States

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About

J. Christopher Howk is a Professor at the University of Notre Dame in the United States. His research focuses on various aspects of astrophysics, particularly the study of circumgalactic and intergalactic media, metal distribution in the universe, and the dynamics of gas in relation to stellar and galactic evolution. Recent publications include works on the Milky Way halo, interstellar absorption, and observations of low surface brightness galaxies.

Articles (16)

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2025

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2025

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2025

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2023

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2022

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2022

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2021

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2021

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2020

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2020

Collaborators (10)

Brian O'Shea

Professor

Michigan State University

UNITED STATES

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Sanchayeeta Borthakur

Associate Professor

Arizona State University

UNITED STATES

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Ayan Acharyya

Johns Hopkins University

UNITED STATES

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Daniel Thomas

University of Portsmouth

UNITED KINGDOM

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Matthew Wilde

University of Washington

UNITED STATES

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Nicolas Lehner

Research Professor

University of Notre Dame

UNITED STATES

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Kathy Cooksey

associate professor

University of Hawaii

UNITED STATES

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Kyle Westfall

University of California

UNITED STATES

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Jessica Werk

Associate Professor

University of Washington

UNITED STATES

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John O'Meara

Chief Scientist

UNITED STATES

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J. Christopher Howk

Research Interests

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About

Articles (16)

The Warm–Hot Disk–Halo Interface below the Perseus Spiral Arm*

A Global Census of Metals in the Universe

Tilsotua: Reproducing Slitmask Sky Positions for use with the LRIS Multislit Archive

Prospects for studying million-degree gas in the Milky Way halo using the forbidden optical [Fe X] and [Fe XIV] intersystem lines

Sloan Digital Sky Survey IV MaStar: Quantification and Abatement of Interstellar Absorption in the Largest Empirical Stellar Spectral Library

The COS CGM Compendium. V. The Dichotomy of O vi Associated with Low- and High-metallicity Cool Gas at z < 1

The CGM2 Survey: Quenching and the Transformation of the Circumgalactic Medium

The Bimodal Absorption System Imaging Campaign (BASIC). I. A Dual Population of Low-metallicity Absorbers at z < 1

KODIAQ-Z: Metals and Baryons in the Cool Intergalactic and Circumgalactic Gas at 2.2 ≲ z ≲ 3.6

The Giant Low Surface Brightness Galaxy Malin 1: New Constraints for Its Molecular Gas Mass from GBT/ARGUS Observations

The COS CGM Compendium. IV. Effects of Varying Ionization Backgrounds on Metallicity Determinations in the z < 1 Circumgalactic Medium

The CGM2 Survey: Circumgalactic O vi from Dwarf to Massive Star-forming Galaxies

The H i Column Density Distribution of the Galactic Disk and Halo

The Third Data Release of the KODIAQ Survey

Project AMIGA: The Circumgalactic Medium of Andromeda

The Cosmic Baryon and Metal Cycles

Collaborators (10)

Brian O'Shea

Sanchayeeta Borthakur

Ayan Acharyya

Daniel Thomas

Matthew Wilde

Nicolas Lehner

Kathy Cooksey

Kyle Westfall

Jessica Werk

John O'Meara

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