Collinder 69 Cluster X-Ray Point Source Catalog from XMM-Newton

XMM-Newton X-ray point source catalog for the Collinder 69 cluster in the Lambda Orionis region, with sources detected above a maximum likelihood value of 15.0. The table was created by NASA's HEASARC in July 2011 based on data from the CDS. It is part of a series aiming to provide a comprehensive X-ray view of the star-forming region.

Use Cases

• Identify diskless Class III pre-main sequence objects based on X-ray detection and cross-matched photometry.
• Establish X-ray luminosity functions for stellar associations using point source catalogs.
• Assess stellar membership in clusters using color-color and color-magnitude diagrams derived from optical and infrared data.
• Study the presence of circumstellar disks using mid-infrared photometry from Spitzer.
• Derive stellar properties like effective temperatures and masses via spectral energy distribution fitting.

Strengths

• Data combines X-ray observations from XMM-Newton with exhaustive optical and infrared photometry.
• Sources are filtered with a specific detection threshold (maximum likelihood > 15.0).
• Companion table provides optical, infrared, and membership information for cross-referencing.

Limitations

• Row count and column definitions are unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect observational biases inherent to the XMM-Newton satellite and specific fields (C69E and C69W).

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC)

Collection Method

Combined two exposures from the XMM-Newton satellite with optical and infrared photometry.

Time Range

null

Freshness

Last updated 2026-03-13 17:35:03.882525; freshness should be verified.

Geography

Lambda Orionis star-forming region (Orion's Head), specifically the Collinder 69 cluster fields.