The BMW-Chandra survey. Serendipitous Source Catalogue

TL;DR

This paper presents a comprehensive catalog of over 21,000 X-ray sources detected by Chandra, including serendipitous detections, with detailed positional, spectral, and cross-matched data for astronomical research.

Contribution

The first large-scale, publicly available serendipitous X-ray source catalog from Chandra ACIS-I observations, with extensive multi-band and cross-matched information.

Findings

Catalog contains 21,325 sources, 16,758 serendipitous.

Sky coverage of ~8 deg^2 in soft band at F_X > 10^-13 erg cm^-2 s^-1.

Includes multi-band count rates and cross-matches with other catalogs.

Abstract

We present the BMW-Chandra source catalogue derived from Chandra ACIS-I observations (exposure time >10ks) public as of March 2003 by using a wavelet detection algorithm (Lazzati et al. 1999; Campana et al. 1999). The catalogue contains a total of 21325 sources, 16758 of which are serendipitous. Our sky coverage in the soft band (0.5-2 keV, S/N =3) is ~8 deg^2 for F_X > 10^-13 erg cm^-2 s-1, and ~2 deg^2 for F_X >10^-15 erg cm^-2 s^-1. The catalogue contains information on positions, count rates (and errors) in three energy bands. (total, 0.5-7 keV; soft, 0.5-2 keV; and hard, 2-7keV), and in four additional energy bands, SB1 (0.5-1keV), SB2 (1-2 keV), HB1 (2-4 keV), and HB2 (4-7keV), as well as information on the source extension, and cross-matches with the FIRST, IRAS, 2MASS, and GSC-2 catalogues.