Fig. 21 from The Chandra Deep Field–South: Optical Spectroscopy. I.

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The Chandra Deep Field–South: Optical Spectroscopy. I.

Authors: G. P. Szokoly, J. Bergeron, G. Hasinger, I. Lehmann, L. Kewley, V. Mainieri, M. Nonino, P. Rosati, R. Giacconi, R. Gilli, R. Gilmozzi, C. Norman, M. Romaniello, E. Schreier, P. Tozzi, J. X. Wang, W. Zheng, and A. Zirm

Szokoly et al. 2004 The Astrophysical Journal Supplement Series 155 271.

Provider: AAS Journals

Caption: Fig. 21.

Hardness ratio (defined from the net count rates in the 2–10 keV and 0.5–2 keV bands: see § 7) vs. ﹩R-K﹩ color. Symbols are as in Fig. 2 for the reliable z identifications, similar symbols but of smaller sizes for the tentative z identifications.

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