Marano Field: 195 Optical Counterparts for XMM-Newton X-Ray Sources

328 X-ray sources were detected in a 0.6 deg² survey of the Marano Field using the XMM-Newton satellite. This table lists 195 optical counterparts for 172 of those sources, with 110 classifications reaching ~65% completeness in the core sample. The data was created by NASA HEASARC in May 2007 based on a published catalog.

Use Cases

• Training source classification models based on X-ray flux and optical counterpart data.
• Analyzing the distribution and properties of type II AGN, which constitute about one-third of the sources.
• Cross-matching X-ray and optical catalogs to study the relationship between emission in different wavebands.
• Investigating the completeness of optical follow-up observations for X-ray selected samples.

Strengths

• Contains 195 optical counterpart entries for 172 distinct X-ray sources.
• X-ray fluxes are quantified in the range f_X = (0.16 - 54) x 10^-14 erg cm^-2 s^-1.
• Provides classifications for 110 sources, including five high-redshift type II AGN (2.2 <= z <= 2.8).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Does not contain the full list of 328 X-ray sources, only the optical counterpart subset.

Provenance

Source

NASA HEASARC, based on CDS catalog J/A+A/466/41.

Collection Method

XMM-Newton satellite observations and VLT FORS1/FORS2 optical spectroscopy.

Time Range

Observation date not specified; table created May 2007.

Freshness

Last updated 2026-03-13 19:57:24.073255; freshness should be verified.

Geography

Covers the Marano Field, a 0.6 deg² optical quasar survey region.