Trifid Nebula (M 20) Chandra X-Ray Point Source Catalog

NASA HEASARC provides a catalog of 304 X-ray point sources detected in the Trifid Nebula by the Chandra X-ray Observatory. The observation was conducted on 2002 June 13 for 16 hours using the ACIS-I detector. This table was created in January 2007 based on data from the CDS.

Use Cases

• Identify and catalog X-ray sources in a star-forming region based on the 304 detected sources.
• Study the spectral properties of young stellar objects based on hardness ratio classifications mentioned in the description.
• Cross-match X-ray sources with near-infrared data based on the 70% of sources with near-infrared counterparts.

Strengths

• Contains 304 detected X-ray sources with quantified classifications (30% hard sources).
• Observation details are specific: a 16-hour observation on 2002 June 13 using the Chandra ACIS-I detector.
• High cross-match potential with 70% of sources having near-infrared counterparts.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is known, but specific column names and data types are unknown.
• Data is from a single observation in 2002; temporal coverage is limited.

Provenance

Source

National Aeronautics and Space Administration (NASA), HEASARC.

Collection Method

Observation by the Chandra X-ray Observatory's ACIS-I detector.

Time Range

Observation date: 2002 June 13.

Freshness

Last updated 2026-03-13 19:52:23.125732; freshness should be verified.

Geography

Trifid Nebula (Messier 20), a star-forming H II region.