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SAXWFCCAT - BeppoSAX Wide Field Camera X-Ray Source Catalog

HEASARC
Archive

Overview

This table contains the catalog of X-ray sources detected by the two Wide Field Cameras (WFCs) in complete observations on board BeppoSAX during its 6 years of operational lifetime, i.e., between April 1996 and April 2002. The BeppoSAX WFCs were coded mask instruments sensitive in the 2 - 28 keV energy band with a 40 x 40 square degree fields of view, pointing in opposite directions and perpendicularly to the BeppoSAX Narrow Field Instruments (NFI). The WFCs were usually operated simultaneously to NFI observations, each lasting up to several days. The WFCs observed thus the entire sky several times with a typical sensitivity of 2 to 10 mCrab.

A systematic analysis of all WFC observations in the BeppoSAX archive has been carried out using the latest post-mission release of the WFC analysis software and calibrations. The catalog includes 253 distinct sources, obtained from a total sample of 8253 WFC detections.


Catalog Bibcode

2007A&A...472..705V

References

The BeppoSAX WFC X-ray source catalogue
    Verrecchia F., in 't Zand J.J.M., Giommi P., Santolamazza P., Granata S.,
    Schuurmans J.J., Antonelli A.
    <Astron. Astrophys. 472, 705 (2007)>
    =2007A&A...472..705V        (SIMBAD/NED BibCode)

Provenance

This table was created by the HEASARC in November 2007 based on CDS catalog J/A+A/472/705 file table3.dat.

Parameters

Name
The recommended designation for the X-ray source, using the prefix 'SAXWFC J' (for BeppoSAX, Wide Field Camers) and the truncated J2000 coordinates of the source, e.g., 'SAXWFC JHHMMm+DDMM.m'.

Source_Flag
This flag parameter indicates one of the following detection notes:

   h = detected with the highest SNR in a softer band, 2 - 5.5 or 2 - 3.2 keV
         with respect to the catalogue reference 2 - 8 keV band
   i = detected with the highest SNR in a harder band, 8 - 19, 5.5 - 11, 6 - 13
         or 11 - 19 keV with respect to the catalogue reference 2 - 8 keV band
   j = detected with the highest SNR in a wider band, 2 - 19 or 2 - 26 keV
         band, with respect to the catalogue reference 2 - 8 keV band
   k = source detected in the first processing stage only
  

RA
The Right Ascension of the X-ray source in the selected equinox. This was given in J2000.0 coordinates to a precision of 0.1 seconds of time 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 0.1 arcseconds 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 position error of the X-ray source, in arcseconds (this was converted by the HEASARC from the original arcminutes units). This is the mean 99% confidence level error in X and Y error added in quadrature to a systematic error of 78 arcseconds (1.3 arcminutes).

High_SNR_Exposure
The net exposure time on the X-ray source, in seconds (this was converted by the HEASARC from the original kiloseconds units), for the detection with the maximum SNR.

High_SNR_Flux
The unabsorbed 2 - 10 keV flux of the X-ray source. in erg/s/cm^2, for the detection with the maximum SNR.

High_SNR_Flux_Error
The error in the unabsorbed 2 - 10 keV flux of the X-ray source. in erg/s/cm^2, for the detection with the maximum SNR.

SB_SNR
The detection signal-to-noise ratio (SNR) in the 2 - 8 keV band.

HB_SNR
The detection signal-to-noise ratio (SNR) in the 8 - 19 keV band.

Number_Detections
The number of detections of the X-ray source.

Exposure
The total exposure time on the X-ray source, in seconds (this was converted by the HEASARC from the original kiloseconds units).

Flux
The flux-weighted mean of the unabsorbed 2 - 10 keV flux among all the detections of the X-ray source, in units of erg/s/cm^2.

Flux_Error
The standard deviation of the flux-weighted mean of the unabsorbed 2 - 10 keV flux among all the detections of the X-ray source, in units of erg/s/cm^2.

Reduced_Chi_Squared
The reduced chi-squared of the X-ray source detections in the 2 - 10 keV band. The HEASARC believes that is the value obtained from fitting the observed values with a constant source model, i.e., higher values (>> 1) are an indication that the source is variable.

Max_Flux
The maximum unabsorbed 2 - 10 keV flux of the X-ray source among all the source detections, in erg/s/cm^2.

Min_Flux
The minimum unabsorbed 2 - 10 keV flux of the X-ray source among all the source detections, in erg/s/cm^2,

Alt_Name
The identification of the WFC source obtained from comparison with public databases.

Source_Type
The source classification using the following abbreviations:

             AGN = active galactic nucleus
          AM Her = AM Her type star
             AXP = anomalous X-ray pulsar
               B = burster
              Be = B-emission star
              BH = black hole
          BY Dra = BY Dra type star
             ClG = cluster of galaxies
              CV = cataclysmic variable
               D = dipper
              DN = dwarf nova
               E = intermediate objects
             GlC = in globular cluster
              IP = intermediate polar
           HMXRB = high-mass X-ray binary
             LBV = luminous blue variable type star
           LMXRB = low-mass X-ray binary
               P = polar
             QSO = quasar
              RG = radio galaxy
              RP = radio pulsar
           RSCVn = RS CVn type star
      Seyfert 1  = Seyfert galaxy type 1
      Seyfert 2  = Seyfert galaxy type 2
             SNR = Supernova remnant
              Sy = Symbiotic star
               T = transient source
           U Gem = U Gem type star
              WD = White dwarf
              XB = X-ray binary
              XP = X-ray pulsar
  

Class
The HEASARC Browse object classification for the source based on the value of the source_type parameter.


Contact Person

Questions regarding the SAXWFCCAT database table can be addressed to the HEASARC User Hotline.

Page Author: Browse Software Development Team
Last Modified: 8-Nov-2007