Available Data

HETDEX will ultimately include source spectra for over 1 million Lyman Alpha Emitters at 1.9<z<3.5, ~0.5 million OII emitting galaxies at z<0.5, 20K Active Galactic Nuclei, 200 K stars, and an additional 50K low-redshift galaxies. Stay tuned to a full release of HETDEX Source Catalog and 431K IFU datacubes from the final HETDEX data release as part of PDR1.

Catalogs

Currently, HETDEX AGN Catalogs 1 and 2 and HETDEX Source Catalog 1 are available for download as well as a number of Value Added Catalogs. All catalogs are found here: https://web.corral.tacc.utexas.edu/hetdex/HETDEX/catalogs/

• HETDEX Source Catalog 1. Mentuch Cooper et al. 2022. HETDEX Public Source Catalog 1: 220K Sources including over 50K Lyman Alpha Emitters from an Untargeted Wide-area Spectroscopic Survey
  • Download HETDEX Source Catalog 1 (5.6 Gb all materials)
• HETDEX AGN Catalog 1. Liu et. al 2022. The Active Galactic Nuclei in the Hobby-Eberly Telescope Dark Energy Experiment Survey (HETDEX) I. Sample selection
  • Download HETDEX AGN Catalog 1 (95 Mb)
• HETDEX AGN Catalog 2. Liu et. al 2025.  The Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX) Active Galactic Nuclei Catalog: The Fourth Data Release
  • Download HETDEX AGN Catalog 2 (271 Mb)
• HETDEX-LOFAR Redshift Catalog.  Debski et al 2025. HETDEX-LOFAR Spectroscopic Redshift Catalog.
  • Download HETDEX-LOFAR Catalog (230.4 Mb)
• HETDEX-GAIA Star Catalog. Hawkins et al 2021. Stars of HETDEX. I. RVels & metal-poor stars.
  • Download HETDEX-GAIA Star Catalog (41 Mb), CDS Mirror
• HETDEX-DESI VAC. Landriau et al. 2025. DESI Spectroscopy of HETDEX Emission-line Candidates I: Line Discrimination Validation.
  • Download HETDEX-DESI Catalog, DESI Mirror

Public Data Release 1 (To be released late 2025)

This release consists of all science quality HETDEX data observed between 20170101 until 20240731. Observations are delivered in 3D datacubes. In total, 431K datacubes are included in the release and can be accessed from our data mount or within our HETDEX JupyterHub (see instructions below).

https://web.corral.tacc.utexas.edu/hetdex/HETDEX/pdr/pdr1/

Notebooks at https://github.com/HETDEX/dexcube demonstrate how to query the data release and download datacubes of interest. The datacubes are password protected and only available for internal use.

How to cite HETDEX

Please see the publications page for citation instructions.

HETDEX Jupyter Lab

When the HETDEX Public Data is released, the public may gain access to HETDEX Public data products and public catalogs using the Texas Advanced Computing Center (TACC) Jupyter Lab service. A TACC account is required to sign up.  This will give you open access to the HETDEX Public JupyterHub. Note that no other TACC resources may be accessed without a project allocation and you must download interested data products and save your work on your local machine.

Steps to Access the HETDEX JupyterHub:

1. Get a TACC account here.
2. Sign up for access to the hub in this form.
3. Sign into the HETDEX JupyterHub.

Can’t Access the Hub?

Notebooks at https://github.com/HETDEX/dexcube demonstrate how to query the data release and download datacubes of interest. The datacubes are password protected and only available for internal use.

Confused? Got questions?

For any questions about HETDEX Data Products and Access please reach out to Erin Mentuch Cooper at erin.hetdex @ gmail.com.