NGC 752: Chandra X-Ray Point Source Catalog for a 1.9 Gyr-Old Cluster

262 X-ray sources were detected in a ~140 ks Chandra observation of the open cluster NGC 752. The catalog includes 2MASS J, H, and K band magnitudes for sources with counterparts and was created by NASA to study stellar activity evolution. The data indicates the typical X-ray luminosity for cluster members is a factor of 6 less than in the younger Hyades cluster.

Use Cases

• Modeling stellar activity decay based on X-ray luminosity and cluster age mentioned in the description
• Correlating X-ray emission with infrared photometry based on the included 2MASS J, H, and K band magnitudes
• Comparing stellar rotation regimes between clusters using the derived X-ray luminosity proportional to rotational rate squared
• Detecting and cataloging X-ray point sources in a crowded stellar field using the described wavelet transform algorithm

Strengths

• ~140 ks Chandra observation provides a deep X-ray exposure
• Includes 2MASS infrared magnitudes for sources with counterparts
• Derived X-ray luminosities for 28 observed cluster members and 11 candidates
• Source detection performed with a specific algorithm (PWDETECT) to minimize spurious detections

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Data may reflect observational bias inherent to the specific Chandra and XMM-Newton pointings

Provenance

Source

National Aeronautics and Space Administration

Collection Method

X-ray source detection performed on Chandra ACIS event list using the PWDETECT wavelet transform algorithm.

Time Range

Observation performed on September 29, 2003.

Freshness

Last updated 2026-03-13 17:14:40.637103; freshness should be verified

Geography

Targets the open star cluster NGC 752.