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Articles by Karl Gebhardt

DESI Spectroscopy of HETDEX Emission-line Candidates I: Line Discrimination Validation
4 March 2025 by Martin Landriau and others
Cosmology and Nongalactic Astrophysics
The JWST View of Cygnus A: Jet-Driven Coronal Outflow with a Twist
10 February 2025 by Patrick Ogle and others
Astrophysics of Galaxies
The Hobby-Eberly Telescope Dark Energy Experiment Survey (HETDEX) Active Galactic Nuclei Catalog: the Fourth Data Release
27 December 2024 by Chenxu Liu and others
Astrophysics of Galaxies
The Black Hole Mass and Photometric Components of NGC 4826
17 September 2024 by Kayhan Gültekin and others
Astrophysics of Galaxies, High Energy Astrophysical Phenomena
Modeling ALMA Observations of the Warped Molecular Gas Disk in the Red Nugget Relic Galaxy NGC 384
13 September 2024 by Jonathan Cohn and others
Astrophysics of Galaxies
Participatory Science and Machine Learning Applied to Millions of Sources in the Hobby-Eberly Telescope Dark Energy Experiment
12 September 2024 by Lindsay House and others
Instrumentation and Methods for Astrophysics, Cosmology and Nongalactic Astrophysics
A Stellar Dynamical Mass Measurement of the Supermassive Black Hole in NGC 3258
19 July 2024 by Thomas Waters and others
Astrophysics of Galaxies
Absorption Troughs of Lyman Alpha Emitters in HETDEX
4 January 2024 by Laurel Weiss and others at LogoUniversity of Texas at Austin
Astrophysics of Galaxies
The Pre-explosion Environments and The Progenitor of SN 2023ixf from the Hobby Eberly Telescope Dark Energy Experiment (HETDEX)
17 November 2023 by Chenxu Liu and others
Astrophysics of Galaxies, Solar and Stellar Astrophysics
ALMA gas-dynamical mass measurement of the supermassive black hole in the red nugget relic galaxy PGC 11179
17 October 2023 by Jonathan Cohn and others
Astrophysics of Galaxies
Revisiting the black hole mass of M87* using VLT/MUSE Adaptive Optics Integral Field Unit data I: Ionized gas kinematics
1 September 2023 by J. Osorno and others at LogoMax-Planck-Institut für Radioastronomie
Astrophysics of Galaxies
HETDEX Public Source Catalog 1 -- Stacking 50K Lyman Alpha Emitters
6 July 2023 by Dustin Davis and others
Astrophysics of Galaxies
The LIGO HET Response (LIGHETR) Project to Discover and Spectroscopically Follow Optical Transients Associated with Neutron Star Mergers
27 June 2023 by Maria Jose Bustamante-Rosell and others
High Energy Astrophysical Phenomena, Instrumentation and Methods for Astrophysics
Cosmological-Scale Lyman-alpha Forest Absorption Around Galaxies and AGN Probed with the HETDEX and SDSS Spectroscopic Data
25 April 2023 by Dongsheng Sun and others
Astrophysics of Galaxies
Using Dark Energy Explorers and Machine Learning to Enhance the Hobby-Eberly Telescope Dark Energy Experiment
14 April 2023 by Lindsay House and others
Instrumentation and Methods for Astrophysics, Cosmology and Nongalactic Astrophysics
Introducing the Texas Euclid Survey for Lyman Alpha (TESLA) Survey: Initial Study Correlating Galaxy Properties to Lyman-Alpha Emission
6 April 2023 by Óscar A. Chávez Ortiz and others
Astrophysics of Galaxies
The Stellar Mass - Black Hole Mass Relation at z\sim2 Down to \mathcal{M}_\mathrm{BH}\sim10^7 M_\odot Determined by HETDEX
6 March 2023 by Yechi Zhang and others
Astrophysics of Galaxies
Identifying Active Galactic Nuclei at z\sim3 from the HETDEX Survey Using Machine Learning
22 February 2023 by Valentina Tardugno Poleo and others
Astrophysics of Galaxies
HETDEX Public Source Catalog 1: 220K Sources Including Over 50K Lyman Alpha Emitters from an Untargeted Wide-area Spectroscopic Survey
4 January 2023 by Erin Mentuch Cooper and others
Astrophysics of Galaxies, Cosmology and Nongalactic Astrophysics
The HETDEX Survey: Emission Line Exploration and Source Classification
4 January 2023 by Dustin Davis and others
Astrophysics of Galaxies, Cosmology and Nongalactic Astrophysics
Searching for Supernovae in HETDEX Data Release 3
16 December 2022 by Jòzsef Vinkò and others
High Energy Astrophysical Phenomena
A Search for Lensed Lyman-Alpha Emitters within the Early HETDEX Data Set
25 October 2022 by Isaac Laseter and others
Astrophysics of Galaxies
The Active Galactic Nuclei in the Hobby-Eberly Telescope Dark Energy Experiment Survey (HETDEX) III. A red quasar with extremely high equivalent widths showing powerful outflows
23 October 2022 by Chenxu Liu and others
Astrophysics of Galaxies
Stellar Populations of Lyman-alpha Emitting Galaxies in the HETDEX Survey I: An Analysis of LAEs in the GOODS-N Field
2 August 2022 by Adam Mccarron and others at LogoRutgers University
Astrophysics of Galaxies
The Active Galactic Nuclei in the Hobby-Eberly Telescope Dark Energy Experiment Survey (HETDEX) II. Luminosity Function
24 July 2022 by Chenxu Liu and others
Astrophysics of Galaxies
Lyα Halos around [O III]-Selected Galaxies in HETDEX
22 July 2022 by Maja Lujan Niemeyer and others
Astrophysics of Galaxies, Cosmology and Nongalactic Astrophysics
Gas inflows in the polar ring of NGC 4111: the birth of an AGN
18 July 2022 by Gabriel Hauschild-Roier and others
Astrophysics of Galaxies
The Active Galactic Nuclei in the Hobby-Eberly Telescope Dark Energy Experiment Survey (HETDEX) I. Sample selection
29 April 2022 by Chenxu Liu and others
Astrophysics of Galaxies
Surface Brightness Profile of Lyman-α Halos out to 320 kpc in HETDEX
9 March 2022 by Maja Lujan Niemeyer and others
Astrophysics of Galaxies, Cosmology and Nongalactic Astrophysics
The HETDEX Instrumentation: Hobby-Eberly Telescope Wide Field Upgrade and VIRUS
7 December 2021 by Gary Hill and others
Instrumentation and Methods for Astrophysics
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