Final Release of Quasars.Org: 48,215 QSOs and 100,343 QSO candidates

Get 100,343 quasar candidates from the Free Lunch radio/xray/optical
catalogue on ftp://quasars.org . It is 13Mb zipped, and displays
500,872 optical objects which are associated to xray/radio detections,
or are known quasars. The optical objects are sourced from the APM
and USNO optical catalogues. Associations presented a

ROSAT HRI: 13,290 optical associations out of 56,398 astrometrically
unique xray detections (the rest of the HRI are all duplicates)
ROSAT RASS: 30,614 / 124,730 xray
ROSAT PSPC: 30,415 / 102,005 xray
WGA (PSPC): 18,974 / 88,578 xray
FIRST: 155,182 / 781,667 radio, plus 11,531 double radio lobes.
NVSS: 242,886 / 1,810,664 radio, plus 8878 double lobes.
SUMSS: 27,590 / 134,865 radio, plus 1166 double lobes.

These associations yield 100,343 good quasar candidates, with
calculated percentage of being a QSO displayed for each object. Also
48,215 catalogued quasars are displayed (regardless of radio or xray
detection), which are visible on the APM and/or the USNO A2.0. There
is also a more comprehensive Master catalogue on the same site,
which gives additional information about each optical object, plus the
particulars of the double lobes.

Quasars from the 2QZ full release, SDSS-DR1 final release and 11th
Veron catalogue which appear as optical objects on the APM / USNO-A2.0
are included in this release, which is the final release of
Quasars.Org. The paper for this catalogue is in preparation, which is
taking longer than expected (as you'd expect!).

QUASARS.ORG. There is no second place. ftp://quasars.org

Eric Flesch
Wellington, New Zealand
4 September 2003