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  <title>XMM-Newton COSMOS X-Ray Point Source Catalog</title>
  <shortName>XMMCOSMOS</shortName>
  <identifier>ivo://nasa.heasarc/xmmcosmos</identifier>
  <curation>
    <publisher ivo-id="ivo://nasa.heasarc/ASD">NASA/GSFC HEASARC</publisher>
    <creator>
      <name>Cappelluti et al.</name>
    </creator>
    <contributor/>
    <date>2026-07-17</date>
    <contact>
      <name>NASA/GSFC HEASARC help desk</name>
      <email>heasarc-vo at athena.gsfc.nasa.gov</email>
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  <content>
    <subject>Survey Source</subject>
    <description>
      This table contains the XMM-Newton EPIC COSMOS X-ray point-like source catalog (XMM-COSMOS). The COSMOS survey is a multiwavelength survey aimed to study the evolution of galaxies, AGN and large scale structures. Within this survey, XMM-COSMOS is a powerful tool for detecting AGN and galaxy clusters. The XMM-COSMOS is a deep X-ray survey over the full 2 deg&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt; of the COSMOS area. It consists of 55 XMM-Newton pointings for a total exposure of ~1.5 Ms with an average vignetting-corrected depth of 40 ks across the field of view and a sky coverage of 2.13 deg&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;. The analysis was performed using the XMM-SAS data analysis package in the 0.5-2 keV, 2-10 keV and 5-10 keV energy bands. Source detection has been performed using a maximum likelihood technique especially designed for raster scan surveys. The completeness of the catalog as well as log N-log S and source density maps have been calibrated using Monte Carlo simulations. This is the catalogue of point-like X-ray sources detected with the EPIC CCD cameras. The catalogs contains a total of 1887 unique sources detected in at least one band with likelihood parameter det_ml &amp;gt; 10. The survey, which shows unprecedented homogeneity, has a flux limit of ~1.7 x 10&amp;lt;sup&amp;gt;-15&amp;lt;/sup&amp;gt; erg/cm&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;/s, ~9.3 x 10&amp;lt;sup&amp;gt;-15&amp;lt;/sup&amp;gt; erg/cm&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;/s and ~1.3 x 10&amp;lt;sup&amp;gt;-14&amp;lt;/sup&amp;gt; erg/cm&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;/s over 90% of the area (1.92 deg&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;) in the 0.5-2 keV, 2-10 keV and 5-10 keV energy bands, respectively. This table was created by the HEASARC in April 2009 based on the electronic version of Table 3 from the paper which was obtained from the CDS (their catalog J/A+A/497/635 file catalog.dat). It was last updated in May 2010 to correct the source number for XMMU J100100.7+015947 to be XMMC 129, as indicated by SIMBAD. This is a service provided by NASA HEASARC .
    </description>
    <source format="">
      2009A&amp;amp;A...497..635C
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          XMM-Newton COSMOS X-Ray Point Source Catalog
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            Flux in 2-10keV (Hard) Band
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          <unit>erg/s/cm^2</unit>
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            phot.flux;em.X-ray.medium
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            RMS Uncertainty on Hard-Band Flux
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          <unit>erg/s/cm^2</unit>
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            Sequential Identification Number for Each Source in Catalog
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            Galactic Latitude
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          <unit>degree</unit>
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            2-10keV Band background Counts
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          <unit>ct/pixel</unit>
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            5-10keV Band Background Counts
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            RMS Uncertainty on Ultra-Hard-Band Flux
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            5-10keV Band Detection Likelihood
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            2-10keV Band Vignetting-Corrected Exposure
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            0.5-2keV Band Vignetting-Corrected Exposure
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            Galactic Longitude
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          <unit>degree</unit>
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