Rosat All-Sky Survey Faint Source Catalogue

W. Voges, B. Aschenbach, T. Boller, H. Brauninger, U. Briel, W. Burkert, K. Dennerl, J. Englhauser, R. Gruber, F. Haberl, G. Hartner, G. Hasinger, E. Pfeffermann, W. Pietsch, P. Predehl, J. Schmitt, J. Trumper, and U. Zimmermann, Max-Planck-Institut fur Extraterrestrische Physik, Garching, report: "The ROSAT All-Sky Survey Faint Source Catalogue (RASS-FSC) has been released and is available through the World Wide Web (at http://wave.xray.mpe.mpg.de/rosat/catalogues/rass-fsc/) and via anonymous ftp (host ftp.xray.mpe.mpg.de, directory rosat/catalogues/rass-fsc). This catalogue is derived from the all-sky survey performed during the ROSAT mission in the energy band 0.1-2.4 keV, and 105 924 sources are catalogued, representing the faint extension to the RASS bright-source catalogue (RASS-BSC; cf. IAUC 6420; Voges et al. 1999, A.Ap. 349, 389). The sources contain at least six source photons and have a detection likelihood, -ln (1-P), of at least 7, where P is the probability of source detection. For each source we provide the ROSAT name, the position in equatorial coordinates, the positional error, the source countrate and error, the background countrate, exposure time, date of observation, two hardness ratios and errors, extent and likelihood of extent, and likelihood of detection. Questions or comments may be directed to survey@xray.mpe.mpg.de."