We present the first results from an XMM-Newton serendipitous medium-deep survey, which covers nearly 3 deg(2). We detect a total of 1022, 495, and 100 sources, down to minimum fluxes of about 5.9 x 10(-16), 2.8 x 10(-15), and 6.2 x 10(-15) ergs cm(-2) s(-1), in the 0.5-2, 2-10, and 4.5-10 keV bands, respectively. In the soft band this is one of the largest samples available to date and surely the largest in the 2-10 keV band at our limiting X-ray flux. The measured log N-log S determinations are found to be in good agreement with previous determinations. In the 0.5-2 keV band, we detect a break at fluxes around 5 x 10(-15) ergs cm(-2) s(-1). In the harder bands, we fill in the gap at intermediate fluxes between deeper Chandra and XMM-Newton observations and shallower BeppoSAX and ASCA surveys.

Baldi A, Molendi S, Comastri A, Fiore F, Matt G, & Vignali C (2002). The HELLAS2XMM survey. I. The X-ray data and the log N-log S relation. THE ASTROPHYSICAL JOURNAL, 564(1), 190-195 [10.1086/324261].

The HELLAS2XMM survey. I. The X-ray data and the log N-log S relation

MATT, Giorgio;
2002

Abstract

We present the first results from an XMM-Newton serendipitous medium-deep survey, which covers nearly 3 deg(2). We detect a total of 1022, 495, and 100 sources, down to minimum fluxes of about 5.9 x 10(-16), 2.8 x 10(-15), and 6.2 x 10(-15) ergs cm(-2) s(-1), in the 0.5-2, 2-10, and 4.5-10 keV bands, respectively. In the soft band this is one of the largest samples available to date and surely the largest in the 2-10 keV band at our limiting X-ray flux. The measured log N-log S determinations are found to be in good agreement with previous determinations. In the 0.5-2 keV band, we detect a break at fluxes around 5 x 10(-15) ergs cm(-2) s(-1). In the harder bands, we fill in the gap at intermediate fluxes between deeper Chandra and XMM-Newton observations and shallower BeppoSAX and ASCA surveys.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11590/132461
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