VLA A2390: 1.4-GHz Radio Source Catalog for a Galaxy Cluster

NASA HEASARC provides a catalog of 524 radio sources detected at 1.4 GHz in the field of galaxy cluster A2390, observed with the Very Large Array. The data originates from a deep 31.4-hour observation in October 2008, covering a 34' x 34' area with a noise level of ~5.6 μJy. This table was created in August 2017 based on the CDS Catalog J/ApJS/202/2/.

Use Cases

• Constructing differential radio source number counts based on flux density (S1.4GHz) data.
• Comparing faint source populations in cluster fields versus blank fields as described in the reference paper.
• Investigating cosmic variance by comparing results with the companion A370 cluster catalog.
• Analyzing the spatial distribution of radio sources within a 16' radius of the cluster center.

Strengths

• One of the deepest radio images of a cluster field ever taken, with a noise level of ~5.6 μJy.
• Covers a well-defined 34' x 34' area with a high-resolution synthesized beam of ~1.4".
• Based on a substantial 31.4 hours of on-source observation time with the VLA in A configuration.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown for this specific HEASARC version, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC), based on CDS Catalog J/ApJS/202/2/.

Collection Method

Observations made with the Very Large Array (VLA) in the A configuration.

Time Range

Observation date: October 2008.

Freshness

Last updated 2026-03-13 18:23:37.586523; freshness should be verified.

Geography

Field center located at J2000 coordinates 21:53:36 +17:41:52.