Soft X-ray properties of ultraluminous IRAS galaxies

被引：3

作者：

Boller, T

机构：

[1] Max-Planck-Institut für Extraterrestrische Physik,

来源：

ASTROPHYSICS AND SPACE SCIENCE | 1999年 / 266卷 / 1-2期

关键词：

Visual Inspection; Pointed Observation; Survey Observation; Diagnostic Diagram; IRAS Galaxy;

D O I：

10.1023/A:1002677009938

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：49 / 54

页数：6

共 4 条

[1]

Boller T, 1996, ASTR SOC P, V103, P159

[2] THE IRAS 1.2 JY SURVEY - REDSHIFT DATA [J].