Fig. 8 from The 172 ks Chandra Exposure of the LALA Bootes Field: X‐Ray Source Catalog

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The 172 ks Chandra Exposure of the LALA Bootes Field: X‐Ray Source Catalog

Authors: J. X. Wang, S. Malhotra, J. E. Rhoads, M. J. I. Brown, A. Dey, T. M. Heckman, B. T. Jannuzi, C. A. Norman, G. P. Tiede, and P. Tozzi

Wang et al. 2004 The Astronomical Journal 127 213.

Provider: AAS Journals

Caption: Fig. 8.

Optical R‐band magnitudes of the X‐ray–detected sources vs. their soft (0.5–2.0 keV) and hard (2–10 keV) X‐ray fluxes. The 3 σ upper limits are plotted for sources without R‐band counterparts. Dotted lines show the location of constant X‐ray–to–optical flux ratio log(f_X/f_R) of +1, 0, and −1. Dots enclosed by squares are optically extended sources.

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