NGC 4214 Chandra X-Ray Point Source Catalog with 116 Sources

79 ks of combined archival Chandra X-Ray Observatory observations of the starburst galaxy NGC 4214, conducted in 2001 and 2004. The catalog contains 116 high-significance X-ray point sources down to a limiting luminosity of ~5e35 erg/s, produced by NASA HEASARC in September 2015. It includes hardness ratios, spectral analysis, and cross-correlations with Hubble Space Telescope data for preliminary source classification.

Use Cases

• Classify X-ray sources as likely X-ray binaries, background AGN, supernova remnants, or foreground stars based on cross-correlations with optical counterparts.
• Analyze temporal variability of high-significance X-ray sources in a starburst galaxy environment.
• Study the radial distribution of X-ray point sources within the galaxy NGC 4214.
• Perform spectral analysis and calculate X-ray hardness ratios across nine energy bands.
• Compare source populations across galaxies as part of the broader Chandra Local Volume Survey.

Strengths

• Contains 116 high-significance sources with a strict Poisson probability threshold (pns < 4e-6).
• Based on 79 ks of effective exposure time from three separate Chandra ACIS-S observations.
• Includes multi-wavelength cross-correlation with Hubble Space Telescope data for source classification.

Limitations

• Excludes 95 lower-significance sources (4e-6 < pns < 1e-3) which may be genuine.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC)

Collection Method

Iterative source detection using wavdetect and ACIS-Extract on Chandra ACIS-S data.

Time Range

Observations from 2001-10 16 and 2004-04-03, 2004-07-30.

Freshness

Last updated 2026-03-13 19:20:30.039947; freshness should be verified.

Geography

The IAB(s)m galaxy NGC 4214, a nearby starburst galaxy.