AAS 196th Meeting, June 2000
Session 53. Surveys, Catalogs, Database
Display, Thursday, June 8, 2000, 9:20am-4:00pm, Empire Hall South

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[53.10] An update to the WGACAT ROSAT PSPC source catalog

L. Angelini, S. Park (LHEA/GSFC/USRA), N.E. White (LHEA/GSFC), P. Giommi (BeppoSAX-SDC/ASI)

We present an updated and the final version of the WGACAT generated using all the PSPC ROSAT public pointed observation in the HEASARC archive. The large 2 degree field of view of the ROSAT PSPC makes it ideal as a survey instrument. Over the entire 4 yr pointed phase of the ROSAT program approximately 18% of the sky has been covered to varying degrees of sensitivity. While the sky coverage is not complete, each observation has an exposure typically a factor of 100 longer than that achieved during the six month ROSAT all sky survey. The first version of the WGACAT was released in November 1994 with an update in March 1995, and it included data that were available in the public archive as of Feb. 1995. The catalog contained an excess of 68,000 point sources. The updated version, presented here, includes all the data taken with the ROSAT PSPC during the pointed phase and contains ~ 88000 sources. The catalog has been quality checked and for each source a number of useful parameters have been added. For each observation intensity, energy and timing images are available and for each source detected a spectrum and lightcurve. The catalog and the data products can be accessed via the HEASARC on-line service (http://heasarc.gsfc.nasa.gov) or from the wgacat home page (http://wgacat.gsfc.nasa.gov).

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