Cygnus OB2 Association X-Ray Point Source Catalog from XMM-Newton

The Cygnus OB2 stellar association in our Galaxy was observed using the XMM-Newton satellite. The catalog lists general properties of X-ray sources detected in six observations of the association's core, created by NASA HEASARC in December 2011. It focuses on massive O-type stars and low-mass pre-main sequence stars, with analysis of X-ray variability.

Use Cases

• Studying X-ray variability in massive OB stars based on the analysis of long-term and short-term variations mentioned in the description.
• Investigating interacting wind binary systems based on the variable X-ray properties of stars like MT91 516 and CPR2002A11.
• Analyzing the relationship between X-ray and bolometric luminosity (log L_X/L_bol) for stars like Cyg OB2 #12.
• Cataloging X-ray point sources in a heavily reddened region of the Galaxy to overcome interstellar absorption effects.

Strengths

• Data originates from six XMM-Newton observations, a major space observatory.
• Analysis includes specific quantitative findings, such as a 37% X-ray flux variation for Cyg OB2 #12 and a mean log L_X/L_bol of -6.10.
• Catalog was created and served by NASA HEASARC, an authoritative data center.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The associated UV filter data from the OM instrument (Table 4 in the reference paper) is not included in this table.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC)

Collection Method

Analysis of six XMM-Newton EPIC camera observations of the Cygnus OB2 association core.

Time Range

Observational timeframe not specified; catalog created December 2011.

Freshness

Last updated 2026-03-13 19:25:25.127722; freshness should be verified.

Geography

The Cygnus OB2 stellar association in our Galaxy.