COMBO-17 CDFS目录的校准更新
Calibration update of the COMBO-17 CDFS catalogue
摘要：
我们提出了一个更新的测光校准的COMBO-17目录上的扩展钱德拉深场南，这是现在一致的GaBoDS和MUSYC目录。因此，光度红移变得稍微更精确，在R<21的星系和R<24的类星体中，其均方根值<0.01，Δ z/（1+z）偏差很小。随着光子噪声的增加，星系的均方根值在R<23时达到0.02，在R~23.5时达到0.035。讨论了z<1时星系静止坐标系颜色的结果。
英文摘要：
We present an update to the photometric calibration of the COMBO-17 catalogue on the Extended Chandra Deep Field South, which is now consistent with the GaBoDS and MUSYC catalogues. As a result, photometric redshifts become slightly more accurate, with <0.01 rms and little bias in the delta_z/(1+z) of galaxies with R<21 and of QSOs with R<24. With increasing photon noise the rms of galaxies reaches 0.02 for R<23 and 0.035 at R~23.5. Consequences for the rest-frame colours of galaxies at z<1 are discussed.
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