CG 12 Chandra X-Ray Point Source Catalog: 128 Sources in a Galactic Globule

The Chandra X-Ray Observatory observed the high Galactic latitude cometary globule CG 12, detecting 128 X-ray sources. Half of these sources are likely young stars formed within the globule's head, revealing a population of over 50 T Tauri stars and one new embedded protostar. The data was collected by NASA in four observations between April and June 2006.

Use Cases

• Study triggered star formation mechanisms based on the spatial and age distribution of the young stellar population.
• Analyze X-ray properties of pre-main sequence stars to estimate independent distances.
• Investigate protoplanetary disk evolution based on the reported K-band excesses from inner disks.
• Model radiation-driven implosion or multi-episode triggering scenarios based on the inconsistent stellar distributions.

Strengths

• Contains 128 detected X-ray sources with detailed observational parameters.
• Provides a new population of over 50 T Tauri stars and one embedded protostar, far larger than previously known.
• Includes data from four distinct Chandra observations with exposure times ranging from ~3 to ~31 ks.

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 pointings and exposure times.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the ACIS detector on board the Chandra X-Ray Observatory.

Time Range

Observations conducted in April and June 2006.

Freshness

Last updated 2026-03 13 17:33:35.869252; freshness should be verified.

Geography

Targets the cometary globule CG 12, located over 200 pc above the Galactic plane.