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WFPC2 Observations of the Hubble Deep Field-South

机译:WFPC2哈勃深地南部的观测

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摘要

The Hubble Deep Field-South observations targeted a high-galactic-latitude field near QSO J2233-606. We present WFPC2 observations of the field in four wide bandpasses centered at roughly 300, 450, 606, and 814 nm. Observations, data reduction procedures, and noise properties of the final images are discussed in detail. A catalog of sources is presented, and the number counts and color distributions of the galaxies are compared to a new catalog of the HDF-N that has been constructed in an identical manner. The two fields are qualitatively similar, with the galaxy number counts for the two fields agreeing to within 20%. The HDF-S has more candidate Lyman-break galaxies at z > 2 than the HDF-N. The star-formation rate per unit volume computed from the HDF-S, based on the UV luminosity of high-redshift candidates, is a factor of 1.9 higher than from the HDF-N at z ~ 2.7, and a factor of 1.3 higher at z ~ 4.
机译:哈勃深南场观测以QSO J2233-606附近的高银纬度场为目标。我们介绍了在四个宽带通中以大约300、450、606和814 nm为中心的该场的WFPC2观测值。详细讨论了观察结果,数据缩减程序和最终图像的噪声特性。列出了源目录,并将星系的数量和颜色分布与以相同方式构造的HDF-N新目录进行了比较。这两个场在质量上相似,两个场的星系数一致在20%以内。 HDF-S在z> 2时比HDF-N具有更多的候选莱曼破裂星系。根据高红移候选者的UV光度,从HDF-S计算出的每单位体积的恒星形成率比z〜2.7的HDF-N高1.9倍,在HD的高时则高1.3倍。 z〜4。

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