Submillimeter properties of the 1 Ms Chandra Deep Field-North X-ray sample

A. J. Barger, L. L. Cowie, A. T. Steffen, A. E. Hornschemeier, W. N. Brandt, G. P. Garmire

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Abstract

We present submillimeter observations for 135 of the 370 X-ray sources detected in the 1 Ms exposure of the Chandra Deep Field-North. Nine of the X-ray sources are significantly detected in the submillimeter. The error-weighted mean 850 μm flux is significant at 1.21 ± 0.27 mJy. This value shows little dependence on the 2-8 keV flux from 5 × 10-16 to 10-14 ergs cm-2 s-1, but sources with brighter X-ray fluxes than this appear weak in the submillimeter. The ensemble of X-ray sources contribute about 15% of the extragalactic background light at 850 μm. The submillimeter excess is found to be strongest in the optically faint X-ray sources that are also seen at 20 cm, which is consistent with these X-ray sources being obscured and at high redshift (z > 1).

Original languageEnglish (US)
Pages (from-to)L23-L28
JournalAstrophysical Journal
Volume560
Issue number1 PART 2
DOIs
StatePublished - Oct 10 2001

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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