Evidence for Large Scale Neutral Hydrogen Gas Absorption in the Environments of Lyman Alpha Emitters
February 14, 2024
By statistically combining the spectra of thousands of distant galaxy spectra, in a technique astronomers call “stacking”, we can see very faint spectral features that are otherwise undetectable in individual galaxies. In a previous post, we shared the work of […]
Read MoreGalaxy Goldmine, including 50 thousand distant galaxies, revealed in HETDEX’s first publicly released source catalog
April 26, 2023
Astronomers have barely scratched the surface of mapping the nearly endless stars and galaxies of the heavens. Using supercomputers, researchers with The University of Texas at Austin have now revealed the locations of more than 200,000 new astronomical objects. Their […]
Read MoreThe Active Galactic Nuclei in the Hobby-Eberly Telescope Dark Energy Experiment Survey (HETDEX)
April 29, 2022
We present the first Active Galactic Nuclei (AGN) catalog in the Hobby-Eberly Telescope Dark Energy Experiment Survey (HETDEX) observed between January 2017 and June 2020. HETDEX is an ongoing spectroscopic survey with no pre-selection based on magnitudes, colors or morphologies, […]
Read MoreHETDEX and the ‘Quest for the Rest’
March 18, 2021
“The hundreds of billions of galaxies it contains, each of them home to billions of stars, planets, and moons as well as massive star-and-planet-forming clouds of gas and dust, and all of the visible light and other energy we can […]
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