NGC 1332: 73 X-Ray Compact Sources from Chandra Observations

73 bona fide X-ray compact point sources were detected in Chandra ACIS-S3 observations of the nearby S0 galaxy NGC 1332. The data, collected by NASA on 2002 September 19-20 during a ~60 ksec exposure, includes source luminosities, spatial distributions, and spectral characteristics. The catalog excludes sources identified as part of diffuse galactic emission or associated with a neighboring galaxy.

Use Cases

• Modeling the X-ray luminosity function (XLF) of point sources based on the reported power-law slope and break characteristics.
• Studying the spatial distribution of X-ray sources relative to the optical light of the galaxy.
• Identifying and analyzing ultraluminous X-ray source (ULX) candidates within the D25 isophote.
• Investigating source variability and spectral hardness to infer compact binary nature.
• Comparing source characteristics and the absence of a central source with other early-type galaxy observations.

Strengths

• Contains 73 specific, bona fide X-ray compact sources with individual detections.
• Observation details are precise, including instrument (Chandra ACIS-S3), date (2002-09-19/20), and exposure (~60 ksec).
• Analysis includes corrections for detection incompleteness and contamination, addressing known observational biases.
• Provides specific luminosity measurements, including for two ULXs and a faint central source in a companion galaxy.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The data were not of sufficient quality to constrain a potential break in the XLF slope at very high luminosities, as noted in the description.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the ACIS instrument aboard the Chandra X-ray Observatory.

Time Range

2002-09-19 to 2002-09-20

Freshness

Last updated 2026-03-13 17:22:18.836633; freshness should be verified.

Geography

The sky region containing the S0 galaxy NGC 1332.