JWST NIRSpec Spectra for Early-Universe Active Galactic Nuclei

Optically extracted 1D spectra from the James Webb Space Telescope for broad-line active galactic nuclei observed within the first billion years of cosmic time. The dataset, created by Erini Lambrides and published on figshare in April 2026, contains spectral data files in TXT format totaling 1.1 MB. It supports the investigation of weak X-ray emission in these early supermassive black holes.

Use Cases

• Analyze spectral emission lines from NIRSpec data to characterize the physical conditions of gas in early AGN.
• Correlate optical spectral features with X-ray emission properties to study accretion disk and corona physics.
• Use the 1D spectra to measure redshifts and black hole masses for AGN in the first 1 Gyr of cosmic time.
• Benchmark spectral models against the observed NIRSpec data to test theories of AGN feedback and evolution.

Strengths

• Data originates from the James Webb Space Telescope, a premier observatory for infrared astronomy.
• Focuses on a scientifically critical epoch: the first 1 billion years of cosmic time.
• Released under a permissive CC-BY-4.0 license, facilitating open science and reuse.

Limitations

• The dataset is small in scale at 1.1 MB, limiting the scope of analysis possible directly from the files.
• Specific details on the number of sources, spectral resolution, or wavelength coverage are not provided in the metadata.
• The raw description is minimal, offering no information on data processing steps or potential calibration issues.

Provenance

Source

James Webb Space Telescope NIRSpec instrument.

Collection Method

Optimal extraction of 1D spectra from observational data.

Time Range

Targets observed within the first 1 Gyr of cosmic time (high redshift).

Freshness

Last updated on 2026-04-08, indicating recent publication.

Geography

Extragalactic; specific celestial coordinates not provided.