XMMCOSMOS - XMM-Newton COSMOS X-Ray Point Source Catalog

Overview

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 deg² 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 deg².

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 > 10. The survey, which shows unprecedented homogeneity, has a flux limit of ~1.7 x 10^-15 erg/cm²/s, ~9.3 x 10^-15 erg/cm²/s and ~1.3 x 10^-14 erg/cm²/s over 90% of the area (1.92 deg²) in the 0.5-2 keV, 2-10 keV and 5-10 keV energy bands, respectively.

Catalog Bibcode

2009A&A...497..635C

References

The XMM-Newton wide-field survey in the COSMOS field.
The point-like X-ray source catalogue.
    Cappelluti N., Brusa M., Hasinger G., Comastri A., Zamorani G.,
    Finoguenov A., Gilli R., Puccetti S., Miyaji T., Salvato M., Vignali C.,
    Aldcroft T., Boehringer H., Brunner H., Civano F., Elvis M., Fiore F.,
    Fruscione A., Griffiths R.E., Guzzo L., Iovino A., Koekemoer A.M.,
    Mainieri V., Scoville N.Z., Shopbell P., Silverman J., Urry C.M.
   <Astron. Astrophys. 497, 635 (2009)>
   =2009A&A...497..635C

Provenance

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.

Parameters

Source_Number
A sequential unique identification number for each X-ray source in this catalog, the so-called XID identification number. This internal reference number scheme is from Hasinger et al. (2007, ApJS/172, 29).

Alt_Name
This alternative X-ray source designation for XMM-COSMOS sources uses the 'XMMC' prefix (for XMM-Newton, COSMOS) and the source number.

Name
The International Astronomical Union-style J2000.0 position-based names for the X-ray sources in this catalog, e.g., 'XMMU JHHMMSS.s+DDMMSS'. All source names begin with the prefix 'XMMU' (for 'XMM-Newton, Unregistered').

RA
The Right Ascension of the X-ray source in the selected equinox. This was given in J2000.0 coordinates to a precision of 10^-6 degrees in the original table.

Dec
The Declination of the X-ray source in the selected equinox. This was given in J2000.0 coordinates to a precision of 10^-6 degrees in the original table.

LII
The Galactic Longitude of the X-ray source.

BII
The Galactic Latitude of the X-ray source.

Error_Radius
The X-ray source positional uncertainty, in arcseconds.

SB_Flux_Limit
This limit parameter for the soft-band (0.5-2.0 keV) flux is set to '<' if the quoted value is an upper limit rather than a detection.

SB_Flux
The X-ray source flux in the 0.5-2 keV (soft) band, in erg cm^-2 s^-1. The procedures by which the count rates were converted into fluxes are discussed in Section 3.1 of the reference paper.

SB_Flux_Error
The RMS uncertainty in the corresponding flux value, in erg cm^-2 s^-1. The flux errors are the statistical uncertainties estimated from the maximum likelihood and do not include uncertainties introduced by the choice of the spectral model to estimate the flux. The authors determined that by varying by Delta(Gamma) = 0.3 the spectral index Gamma assumed in computing the fluxes, the resulting variation of the flux estimate is of the order of 2%, 9%,and 4% in the three bands (soft, hard, ultrahard), respectively.

SB_Counts
The net source counts in the 0.5-2 keV (soft) band.

SB_Counts_Error
The RMS uncertainty in the counts for this band.

SB_Detect_Likelihood
The 0.5-2 keV band detection likelihood parameter, det_ml.

SB_Bck_Counts
The 0.5-2 keV band background counts per pixel, where the pixel scale is 4 arcseconds/pixel.

SB_Exposure
The 0.5-2 keV band vignetting-corrected exposure time, in seconds.

HB_Flux_Limit
This limit parameter for the hard-band (2-10 keV) flux is set to '<' if the quoted value is an upper limit rather than a detection.

HB_Flux
The X-ray source flux in the 2-10 keV (hard) band, in erg cm^-2 s^-1. The procedures by which the count rates were converted into fluxes are discussed in Section 3.1 of the reference paper.

HB_Flux_Error
The RMS uncertainty in the corresponding flux value, in erg cm^-2 s^-1. The flux errors are the statistical uncertainties estimated from the maximum likelihood and do not include uncertainties introduced by the choice of the spectral model to estimate the flux. The authors determined that by varying by Delta(Gamma) = 0.3 the spectral index Gamma assumed in computing the fluxes, the resulting variation of the flux estimate is of the order of 2%, 9%,and 4% in the three bands (soft, hard, ultrahard), respectively.

HB_Counts
The net source counts in the 2-10 keV (hard) band.

HB_Counts_Error
The RMS uncertainty in the counts for this band.

HB_Detect_Likelihood
The 2-10 keV band detection likelihood parameter, det_ml.

HB_Bck_Counts
The 2-10 keV band background counts per pixel, where the pixel scale is 4 arcseconds/pixel.

HB_Exposure
The 2-10 keV band vignetting-corrected exposure time, in seconds.

UHB_Flux_Limit
This limit parameter for the ultrahard-band (5-10 keV) flux is set to '<' if the quoted value is an upper limit rather than a detection.

UHB_Flux
The X-ray source flux in the 5-10 keV (ultrahard) band, in erg cm^-2 s^-1. The procedures by which the count rates were converted into fluxes are discussed in Section 3.1 of the reference paper.

UHB_Flux_Error
The RMS uncertainty in the corresponding flux value, in erg cm^-2 s^-1. The flux errors are the statistical uncertainties estimated from the maximum likelihood and do not include uncertainties introduced by the choice of the spectral model to estimate the flux. The authors determined that by varying by Delta(Gamma) = 0.3 the spectral index Gamma assumed in computing the fluxes, the resulting variation of the flux estimate is of the order of 2%, 9%,and 4% in the three bands (soft, hard, ultrahard), respectively.

UHB_Counts
The net source counts in the 5-10 keV (ultrahard) band.

UHB_Counts_Error
The RMS uncertainty in the counts for this band.

UHB_Detect_Likelihood
The 5-10 keV band detection likelihood parameter, det_ml.

UHB_Bck_Counts
The 5-10 keV band background counts per pixel, where the pixel scale is 4 arcseconds/pixel.

UHB_Exposure
The 5-10 keV band vignetting-corrected exposure time, in seconds.

Contact Person

Questions regarding the XMMCOSMOS database table can be addressed to the HEASARC Help Desk.

Page Author: Browse Software Development Team
Last Modified: Monday, 16-Sep-2024 17:37:07 EDT