X-ray Properties of Point Sources in Two Chandra Deep Fields

Details X-ray Properties of Point Sources in Two Chandra Deep Fields X-ray Properties of Point Sources in Two Chandra Deep Fields

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.2612v&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #26.12; Bulletin of the American Astronomical Society, Vol. 32, p.1225

Astronomy and Astrophysics

Astronomy

Scientific paper

We present an analysis of point sources serendipitously found in two deep Chandra exposures with ACIS-I that were originally obtained to observe clusters of galaxies at high redshifts: MS1137.5+6625 (120 ks) and CL0848.6+4453 (190 ks). Sources, detected with a wavelet-based algorithm, were identified to a limiting flux of about 2 x 10-16 erg cm-2 s-1, at which their density reaches 1700 sources deg-2. LogN -- logS plots are approximately consistent with those obtained from earlier missions and extend these to lower fluxes. We confirm earlier results that show a hardening of spectra at lower fluxes, and discuss implications for the nature and evolution of the sources and for our understanding of the X-ray background.

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