扩展生长带的深部光学成像
The Deep Optical Imaging of the Extended Groth Strip
摘要:
我们目前的$u'g'R$的MMT/Megacam和斯巴鲁/Suprime的扩展Groth带调查的光学图像。总调查涵盖了约$\sim 1$度$^2$的区域,包括四个子领域,并优化了$z\sim3$的星系研究。本文介绍了我们的AB星等测光定标、极限星等测光定标和星系数测光定标方法。1642光度选择的候选LBG的一个明显的$R_{AB}$ 25.0的幅度限制的样本。我们的LBG样本的平均天空表面密度为$\sim$ 1.0 arcmin $^{-2}$,略高于以前的发现。
英文摘要:
We present $u'g'R$ optical images taken with the MMT/Megacam and the Subaru/Suprime of the Extended Groth Strip survey. The total survey covers an area of about $\sim 1$ degree$^2$, including four sub-fields and is optimized for the study of galaxies at $z\sim3$. Our methods for photometric calibration in AB magnitudes, the limiting magnitude and the galaxy number count are described. A sample of 1642 photometrically selected candidate LBGs to an apparent $R_{AB}$ magnitude limit of 25.0 is present. The average sky surface density of our LBGs sample is $\sim$ 1.0 arcmin$^{-2}$, slightly higher than the previous finding.
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