Soft X-ray properties of Ultraluminous IRAS Galaxies
Abstract
Description
A sample of 323 Ultraluminous IRAS galaxies (ULIRGs) has been correlated with the ROSAT All-Sky Survey and ROSAT public pointed observations. 22 objects are detected in ROSAT survey observations, and 6 ULIRGs are detected in addition in ROSAT public pointed observations. The detection is based on a visual inspection of the X-ray contour maps overlaid on optical images of ULIRGs taken from the Digitized Sky Survey. Simple power law fits were used to compute the absorption-corrected fluxes of the ROSAT detected ULIRGs. The ratio of the soft X-ray flux to the far-infrared luminosity is used to estimate the contribution from starburst and AGN emitting processes. These results are compared with the ISO SWS ULIRG diagnostic diagram.
Contribution to the Ringberg ULIRG Workshop, 5 pages, 3 figures, 2 tables. To be published in Astrophysic and Space Science
Contribution to the Ringberg ULIRG Workshop, 5 pages, 3 figures, 2 tables. To be published in Astrophysic and Space Science