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A sample of X-ray emitting normal galaxies from the BMW -- HRI Catalogue

M. Tajer·G. Trinchieri·A. Wolter·S. Campana·A. Moretti·G. Tagliaferri
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Abstract

We have obtained a sample of 143 normal galaxies with X-ray luminosity in the range $10^{38} - 10^{43}$ erg s$^{-1}$ from the cross-correlation of the ROSAT HRI Brera Multi-scale Wavelet (BMW -- HRI) Catalogue with the Lyon-Meudon Extragalactic Database (LEDA). We find that the average X-ray properties of this sample are in good agreement with those of other samples of galaxies in the literature. We have selected a complete flux limited serendipitous sample of 32 galaxies from which we have derived the logN-logS distribution of normal galaxies in the flux range $1.1 - 110 \times 10^{-14}$ erg cm$^{-2}$ s$^{-1}$. The resulting distribution is consistent with the euclidean -1.5 slope. Comparisons with other samples, such as the Extended Medium Sensitivity Survey, the ROSAT All Sky Survey, the XMM - Newton/2dF survey and the Chandra Deep Field Survey indicate that the logN-logS distribution of normal galaxies is consistent with an euclidean slope over a flux range of about 6 decades.

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M. Tajer, G. Trinchieri, A. Wolter, S. Campana, A. Moretti, G. Tagliaferri. 2004-12-22. A sample of X-ray emitting normal galaxies from the BMW -- HRI Catalogue. https://doi.org/10.1051/0004-6361%3A20041520

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