========================================================================== IX/34 The BMW-HRI source catalogue (Panzera+, 2003) The following files can be converted to FITS (extension .fit .fgz or .fiZ) catalog.dat ==========================================================================
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Beginning of ReadMe : IX/34 The BMW-HRI source catalogue (Panzera+, 2003) ================================================================================ The Brera Multi-scale Wavelet ROSAT HRI source catalogue (BMW-HRI). Panzera M.R., Campana S., Covino S., Lazzati D., Mignani R.P., Moretti A., Tagliaferri G. <Astron. Astrophys., 399, 351 (2003)> =2003A&A...399..351P ================================================================================ ADC_Keywords: X-ray sources Mission_Name: ROSAT Keywords: X-ray Abstract: We present the Brera Multi-scale Wavelet ROSAT HRI source catalogue (BMW-HRI) derived from all ROSAT HRI pointed observations with exposure time longer than 100s available in the ROSAT public archives. The data were analyzed automatically using a wavelet detection algorithm suited to the detection and characterization of both point-like and extended sources. This algorithm is able to detect and disentangle sources in very crowded fields and/or in presence of extended or bright sources. Images have been also visually inspected after the analysis to ensure verification. The final catalogue, derived from 4,303 observations, consists of 29,089 sources detected with a detection probability of greater or equal 4.2sigma. For each source, the primary catalogue entries provide name, position, count rate, flux and extension along with the relative errors. In addition, results of cross-correlations with existing catalogues at different wavelengths (FIRST, IRAS, 2MASS and GSC2) are also reported. All these information are available on the web via the DIANA Interface. As an external check, we compared our catalogue with the previously available ROSHRICAT catalogue (both in its short and long versions) and we were able to recover, for the short version, 90% of the entries. We computed the sky coverage of the entire HRI data set by means of simulations. The complete BMW-HRI catalogue provides a sky coverage of 732 square degrees down to a limiting flux of 1x10^-12^erg/s/cm^2^ and of 10 square degrees down to 1x10^-14^erg/s/cm^2^. We were able to compute the cosmological log(N)-log(S) distribution down to a flux of about 1.2x10^-14^erg/s/cm^2^. Description: The BMW-HRI catalogue is generated from US and German ROSAT HRI observations for which data have been released to the US ROSAT archive at GSFC and to the German ROSAT archive at MPE up to December 2001. A total number of 4,303 observations with exposure times longer than 100 s were analyzed automatically using a wavelet detection algorithm. The catalogue consists of 29,089 sources (detection probability greater or equal 4.2 sigma). For each source name, position, count rate, flux and extension along with the relative errors are given.The catalogue also reports results of cross-correlations with existing catalogues at different wavelengths (FIRST, GSC2, 2MASS, and IRAS).