Journal
ASTRONOMISCHE NACHRICHTEN
Volume 329, Issue 2, Pages 174-177Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asna.200710906
Keywords
surveys; X-rays : galaxies
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This paper shows that our understanding of the statistical properties of X-ray selected normal galaxies (e.g. X-ray luminosity function) can be significantly improved by combining a wide-area XMM-Newton survey with the moderate resolution and high S/N optical spectroscopy of the SDSS. Such a combined dataset has the potential to minimise uncertainties that affect existing normal galaxy samples at X-rays, such as small number statistics, cosmic variance, AGN contamination and incompleteness at bright X-ray luminosities. It is demonstrated that a 100 deg(2) XMM-Newton survey in the SDSS area to the limit f(X)(0.5-2 keV) approximate to 5 x 10(-15) erg cm(-2) s(-1) will detect over 400 X-ray selected normal galaxies with excellent control over systematic biases, thereby providing tight contraints on the X-ray luminosity function at z approximate to 0.1. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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