The Brera Multiscale Wavelet detection algorithm applied to the Chandra Deep Field-South: Deeper and deeper

被引：20

作者：

Moretti, A

Lazzati, D

Campana, S

Tagliaferri, G

机构：

[1] Osserv Astron Brera, I-23807 Merate, LC, Italy

[2] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

来源：

ASTROPHYSICAL JOURNAL | 2002年 / 570卷 / 02期

关键词：

methods : data analysis; X-rays : diffuse background; X-rays : general;

D O I：

10.1086/339727

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Chandra Deep Fields represent the deepest look at the X-ray sky. We analyzed the Chandra Deep Field South (CDF-S) with the aid of a dedicated wavelet-based algorithm. Here we present a detailed description of the procedures used to analyze this field, tested and verified by means of extensive simulations. We show that we can safely reconstruct the log N-log S source distribution of the CDF-S down to limiting fluxes of 2.4x10(-17) and 2.1x10(-16) ergs s(-1) cm(-2) in the soft (0.5-2 keV) and hard (2-10 keV) bands, respectively, fainter by a factor of greater than or similar to2 than current estimates. At these levels we can account for greater than or similar to90% of the 1-2 keV and 2-10 keV X-ray background.

引用

页码：502 / 513

页数：12

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