A&A Supplement series, Vol. 129, APRIL I 1998, 87-145
Received June 9; accepted September 16, 1997
Th. Boller
, F. Bertoldi, M. Dennefeld
, and
W. Voges
Send offprint request: Th. Boller
Max-Planck-Institut für Extraterrestrische Physik,
D-85748 Garching, Germany
Institute d'Astrophysique (IAP), 98 bis boulevard-Arago,
F-75014 Paris, France
The 120 000 X-ray sources detected in the RASS II processing
of the ROSAT All-Sky Survey are correlated with the
14 315 IRAS galaxies selected from the IRAS Point Source Catalogue:
372 IRAS galaxies show
X-ray emission within a distance of
100 arcsec from the infrared position. By inspecting the
structure of the
X-ray emission in overlays on optical images
we quantify the likelihood that the X-rays originate from
the IRAS galaxy.
For 197 objects the soft X-ray emission is very likely associated
with the IRAS galaxy. Their soft X-ray properties are determined
and compared with their far-infrared emission.
X-ray contour plots overlaid on Palomar Digitized Sky Survey images
are given for each of the 372 potential identifications.
All images and tables displayed here are also available in electronic form.
keywords: galaxies: general -- galaxies: active -- galaxies: Seyfert -- X-rays: galaxies