NED Abstract 

Reproduced by permission

2000IAUC.7432B...1V
                                                  Circular No. 7432
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION


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."

2000 May 28                    (7432)            Daniel W. E. Green