XMM-Newton Survey: 1,319 X-ray Sources in the Galactic Plane

1319 X-ray sources detected in a 4 square-degree survey of the Milky Way's plane by the XMM-Newton satellite. The dataset, produced by NASA's Survey Science Centre, includes 316 spectroscopically identified sources, primarily active stars, cataclysmic variables, and young stellar objects, observed at flux limits as low as 2×10⁻¹⁵ erg/cm²/s. This collection represents the largest group of identified low-latitude X-ray sources at its sensitivity level.

Use Cases

• Classifying X-ray source populations (e.g., active coronae, cataclysmic variables) based on flux and multi-wavelength cross-correlation.
• Modeling the distribution and luminosity function of low-to-medium luminosity X-ray sources in the Galactic plane.
• Training statistical identification models for serendipitous X-ray sources using the sample of 316 identified objects.
• Analyzing the correlation between X-ray flux, optical/infrared colors, and stellar spectral types (A to M).
• Studying the demographics of young stellar objects (T Tauri, Herbig-Ae stars) and evolved binaries detected at low Galactic latitudes.

Strengths

• Includes 1319 detected X-ray sources with precise soft (0.5-2 keV) and hard (2-12 keV) band flux limits.
• Contains 316 spectroscopically identified sources, forming a substantial reference sample for statistical studies.
• Survey covers a summed area of 4 square degrees across a large range in Galactic longitudes at |b| < 20 degrees.
• Sources are cross-correlated with a large range of multi-wavelength archival catalogs, enhancing contextual data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count for the full source list is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality and completeness require manual inspection after download.

Provenance

Source

National Aeronautics and Space Administration (NASA), XMM-Newton Survey Science Centre (SSC).

Collection Method

Based on 26 XMM-Newton observations, with optical follow-up and cross-correlation to multi-wavelength catalogs.

Time Range

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Freshness

Last updated 2026-03-13 19:50:13.030055; freshness should be verified.

Geography

Galactic plane, at |b| < 20 degrees, distributed over a large range in Galactic longitudes.