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Description
The Chandra-COSMOS Bright Source Catalog version 2.1 contains 1,761 sources detected in the 0.5-7 keV band from the Chandra-COSMOS survey. This survey probes galaxy formation across 75% of the universe's age, covering a 2 square degree equatorial field with data from Hubble, Spitzer, and other major telescopes. The catalog was produced by NASA, with methods and results detailed in associated papers from 2009.
Use Cases
Identify and catalog X-ray emitting objects based on uniform detection confidence in the 0.5-7 keV band.
Study galaxy formation and evolution as a function of cosmic time and large-scale environment, as described in the survey's purpose.
Perform multiwavelength cross-matching and analysis leveraging the nearly 100%-complete source identification discussed.
Analyze the properties of sources detected across a significant portion of the universe's age.
Strengths
Contains 1,761 uniformly detected X-ray sources.
Covers a 2 square degree field with multiwavelength data from major space and ground-based telescopes.
Survey spans 75% of the age of the universe, providing a deep temporal view.
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Row count is known for the catalog but the underlying survey's full data scale is unspecified.
Core catalog methods and papers date from 2009, though the metadata was last updated in 2026.
Provenance
Source
National Aeronautics and Space Administration
Collection Method
Sources detected from the Chandra-COSMOS survey in the 0.5-7 keV band, with methods described in Puccetti et al. 2009.
Time Range
Survey spans 75% of the age of the universe.
Freshness
Last updated 2026-03-13 18:22:09.276440; freshness should be verified.
Geography
Covers a 2 square degree equatorial field.
License is listed as 'other-license-specified'; specific terms must be checked. File formats include BIN and HTML.