47 Tucanae: Chandra X-Ray Point Source Catalog (2005 Version)

A 2005 catalog of 300 X-ray sources detected within the half-mass radius of the globular cluster 47 Tucanae using deep Chandra observations from 2000 and 2002. The data includes photometry, spectral fitting, and variability analysis, with 87 sources showing variability and 31 identified as chromospherically active binaries. This table was created by NASA's HEASARC in June 2007 based on data from the referenced astrophysical journal.

Use Cases

• Modeling neutron star populations in globular clusters based on the estimated total of ~300 neutron stars.
• Analyzing X-ray source variability on timescales from hours to years based on the 87 variable sources.
• Identifying and studying chromospherically active binary systems based on the 31 cross-matched sources.
• Constructing luminosity functions and X-ray color-magnitude diagrams based on the photometry and spectral fitting results.

Strengths

• Contains 300 X-ray sources detected in a deep 281 ks Chandra exposure.
• Includes 87 sources with measured variability and 31 sources with cross-identifications to known catalogs.
• Combines data from two independent observation epochs (2000 and 2002) for temporal analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last updated 2026-03-13 16:53:20.995177; freshness should be verified.

Provenance

Source

NASA HEASARC, based on CDS Catalog J/ApJ/625/796.

Collection Method

Combined source lists from Chandra ACIS-I and ACIS-S observations using wavdetect source detection.

Time Range

Observations from 2000 and 2002.

Freshness

Data is from 2005; a related 2017 catalog is noted.

Geography

Globular cluster 47 Tucanae (NGC 104).