Collinder 69 Cluster: Optical/IR Counterparts to 164 XMM-Newton X-Ray Sources

205 potential optical and infrared counterparts to 164 X-ray point sources detected by the XMM-Newton satellite in the Collinder 69 star-forming region. The data combines X-ray observations with photometry from sources like 2MASS, Spitzer, and ground-based surveys to assess stellar membership and properties. This table was compiled by NASA as part of a series aiming to provide a comprehensive X-ray view of the Lambda Orionis region.

Use Cases

• Identify diskless Class III pre-main sequence objects based on combined X-ray and photometric data.
• Establish X-ray luminosity functions for stellar associations using derived source properties.
• Assess stellar membership in Collinder 69 using color-color and color-magnitude diagrams.
• Investigate the presence of circumstellar disks using mid-infrared photometry from Spitzer.
• Cross-match X-ray sources with optical and infrared catalogs using a 5.1 arcsecond search radius.

Strengths

• Integrates data from multiple authoritative sources, including XMM-Newton, 2MASS, and Spitzer.
• Aims to provide a comprehensive view of a complex star-forming region with several distinct associations.
• Includes derived properties like effective temperatures, masses, and bolometric luminosities from spectral energy distribution fitting.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Combined XMM-Newton satellite exposures with optical, near-IR, and mid-IR photometry surveys.

Time Range

Observations include data from surveys conducted in 1999, 2005, and 2007.

Freshness

Last updated 2026-03-13 18:13:39.342685; freshness should be verified.

Geography

Focuses on the Collinder 69 cluster within the Lambda Orionis (Orion's Head) star-forming region.