Omega Centauri X-Ray Point Source Catalog from XMM-Newton
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Description
146 X-ray sources detected in the Omega Centauri globular cluster by XMM-Newton on August 13, 2001, during a 37 ks observation. The catalog, created by NASA HEASARC in May 2007, includes positions, count rates, and correlations with Chandra data for sources within and outside the cluster's half-mass radius. Most sources have luminosities between ~10^31 and 10^32 ergs s^-1 and are likely cataclysmic variables or active binaries.
Use Cases
Identifying and classifying faint X-ray sources based on their luminosity and spectral hardness mentioned in the description.
Studying the spatial distribution of X-ray sources relative to the cluster's core and half-mass radii.
Analyzing time variability of X-ray sources by comparing XMM-Newton and Chandra observations.
Estimating background source contamination within the observed field.
Investigating the population of cataclysmic variables and active binaries in a massive globular cluster.
Strengths
Includes 146 X-ray sources with positional and count rate data.
Cross-referenced with Chandra data, with 63 sources having a counterpart and 15 showing time variability.
Observation details are specific, including a 37 ks exposure time and a detection threshold of 1.3 x 10^31 ergs s^-1.
Provides estimates for background source contamination (e.g., ~9 of 27 sources within the half-mass radius).
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Detailed spectral information for 17 selected sources from the reference paper is not included in this table.
Row count is unknown, which may limit suitability assessment.
Provenance
Source
National Aeronautics and Space Administration (NASA HEASARC), based on CDS catalog J/A+A/400/521.
Collection Method
X-ray observation performed with the XMM-Newton satellite using the medium filter.
Time Range
Primary observation on August 13, 2001; referenced Chandra observation from January 24-25, 2000.
Freshness
Last updated 2026-03 13 16:38:42.541967; freshness should be verified.
Geography
Omega Centauri (NGC 5139) globular cluster, with a specified distance of 5.3 kpc.
License is listed as 'other-license-specified'; terms should be reviewed before use. Data is provided in BIN and HTML formats.