Kappa Orionis X-Ray Point Source Catalog: 238 Detected Sources

XMM-Newton observations from March 10 and 15, 2015 detected 238 X-ray sources in two fields near the star Kappa Orionis. The catalog, produced by NASA, identifies 121 young stellar objects (YSOs) and cross-correlates X-ray sources with an infrared catalog from Spitzer surveys.

Use Cases

• Study young stellar object populations based on X-ray and infrared cross-identifications.
• Analyze X-ray luminosity functions to estimate distances to stellar groups.
• Investigate the structure and origin of interstellar shells and rings around massive stars.
• Perform source detection and validation analysis based on the described 4.5 sigma significance threshold and wavelet convolution method.

Strengths

• Contains 238 X-ray sources with significance > 4 sigma, providing a substantial sample for analysis.
• Cross-identified with 206 infrared objects from a Spitzer survey, enabling multi-wavelength study.
• Observations have a defined exposure duration of about 50 ks per field, indicating controlled data collection.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data files are in BIN and HTML formats, which may require specialized tools for access and analysis.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Data reduced from XMM-Newton EPIC instrument observations using SAS version 14.0, with source detection via wavelet convolution.

Time Range

Observations from 2015-03-10 and 2015-03-15.

Freshness

Last updated 2026-03-13 18:50:46.236738; freshness should be verified.

Geography

Two fields (North and South) between the Lynds 1641S dark cloud complex and the star Kappa Ori in the Orion region.