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The Extended Chandra Deep Field-South Survey: Optical Properties of X-ray Detected Sources | | Shanil Virani
; Ezequiel Treister
; C. Megan Urry
; Eric Gawiser
; MUSYC Collaboration
; | | Date: |
2 Nov 2005 | | Abstract: | The Extended Chandra Deep Field-South (E-CDF-S) survey consists of 4 Chandra ACIS-I pointings and covers ~1100 square arcminutes (~0.3 deg^2) centered on the original CDF-S field to a depth of approximately 228 ks (PI: Niel Brandt; Lehmer et al, 2005). This is the largest Chandra survey ever conducted at such depth. In our analysis (Virani et al, 2005), we detect 651 unique sources -- 587 using a conservative source detection limit and 64 using a lower source detection limit. Of these 651 sources, 561 are detected in the full 0.5--8.0 keV band, 529 in the soft 0.5--2.0 keV band, and 335 in the hard 2.0--8.0 keV band. For point sources near the aim point, the limiting fluxes are approximately $1.7 imes 10^{-16}$ $
m{erg cm^{-2} s^{-1}}$ and $3.9 imes 10^{-16}$ $
m{erg cm^{-2} s^{-1}}$ in the 0.5--2.0 keV and 2.0--8.0 keV bands, respectively. We present the optical properties of these X-ray sources, specifically the R-band magnitude distribution and a preliminary spectroscopic redshift distribution. One exciting result is the discovery of 7 new Extreme X-ray-to-Optical flux ratio objects (EXOs) found in the E-CDF-S field. | | Source: | arXiv, astro-ph/0511057 | | Services: | Forum | Review | PDF | Favorites | |
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