FIREWORKS U38-to-24 micron photometry of the GOODS-CDFS: multi-wavelength catalog and total IR properties of distant Ks-selected galaxies
FIREWORKS U38-to-24 micron photometry of the GOODS-CDFS: multi-wavelength catalog and total IR properties of distant Ks-selected galaxies
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GOODS-CDFS 的 FIREWORKS U38 至 24 微米光度测定:遥远 Ks 选择星系的多波长目录和总红外特性
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发表时间:
2008
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通讯作者:
P. V. Dokkum
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作者:
S. Wuyts;I. Labbé;N. F. Schreiber;M. Franx;G. Rudnick;G. Brammer;P. V. Dokkum
We present a K s -selected catalog, dubbed FIREWORKS, for the Chandra Deep Field South (CDFS) containing photometry in U 38 , B 435 , B , V , V 606 , R , i 775 , I , z 850 , J , H , K s , [3 . 6 µ m], [4 . 5 µ m], [5 . 8 µ m], [8 . 0 µ m], and the MIPS [24 µ m] band. The imaging has a typical K tot s, AB limit of 24.3 mag (5 σ ) and coverage over 113 arcmin 2 in all bands and 138 arcmin 2 in all bands but H . We cross-correlate our catalog with the 1 Ms X-ray catalog by Giacconi et al. (2002) and with all available spectroscopic redshifts to date. We find and explain systematic differences in a comparison with the ’ z 850 + K s ’-selected GOODS-MUSIC catalog that covers ∼ 90% of the field. We exploit the U 38 -to-24 µ m photometry to determine which K s -selected galaxies at 1 . 5 < z < 2 . 5 have the brightest total IR luminosities and which galaxies contribute most to the integrated total IR emission. The answer to both questions is that red galaxies are dominating in the IR. This is true no matter whether color is defined in the rest-frame UV, optical, or optical-to-NIR. We do find however that among the reddest galaxies in the rest-frame optical, there is a population of sources with only little mid-IR emission, suggesting a quiescent nature.