AGN/galaxy separation in the ROSAT Bright Survey
| dc.creator | Lehmann, I. | |
| dc.creator | Hasinger, G. | |
| dc.creator | Schwope, A. D. | |
| dc.creator | Boller, Th. | |
| dc.date | 1998-10-14 | |
| dc.date.accessioned | 2026-07-07T02:28:23Z | |
| dc.date.available | 2026-07-07T02:28:23Z | |
| dc.description | The X-ray luminosity function (XLF) of galaxies is dominated by AGN (classified by their optical spectra) above Lx=10**42 erg/s, below this value by normal galaxies. The X-ray flux of AGN at low X-ray luminosity therefore contains contributions from stellar processes (winds, supernova explosions etc.). Until now it is not clear which fraction of the observed X-ray flux has to be associated to the underlying stellar emission. We started to investigate a complete luminosity-limited sample of AGN and galaxies with log Lx < 42.5 to discriminate between the nuclear and galaxy flux. Using the ROSAT HRI data we calculated the radial wobble-corrected profiles of the sources which were compared to a new HRI point spread function (PSF) template derived from 21 X-ray bright stars. The majority of the low-luminosiy AGN shows evidence for a significant fraction of extended X-ray emission. | |
| dc.description | 4 pages, 5 figures, to appear in 'Highlights in X-ray Astronomy', symposium held in honour of J. Truempers 65th birthday | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9810214 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9810214 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/13099 | |
| dc.subject | Astrophysics | |
| dc.title | AGN/galaxy separation in the ROSAT Bright Survey | |
| dc.type | text |