OPTICAL SPECTROSCOPIC SURVEY OF HIGH-LATITUDE WISE-SELECTED SOURCES
OPTICAL SPECTROSCOPIC SURVEY OF HIGH-LATITUDE WISE-SELECTED SOURCES
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DOI：
10.1088/0004-6256/143/1/7
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发表时间：
2011-11
期刊：
影响因子：
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通讯作者：
S. Lake;E. L. Wright;S. Petty;R. Assef;T. Jarrett;S. Stanford;D. Stern;C. Tsai
中科院分区：
文献类型：
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作者：
S. Lake;E. L. Wright;S. Petty;R. Assef;T. Jarrett;S. Stanford;D. Stern;C. Tsai
我们报告的结果，光学光谱调查在银河系高纬度（|B| WISE选择的目标样本，按WISE W1（λeff = 3.4 μm）通量分组，我们使用它来表征WISE检测到的源。我们观察了762个目标在10个不相交的领域集中在超亮红外星系候选人使用DEIMOS凯克II。对于W1 <$120 μJy的样本，我们发现0.30 ± 0.02个星系arcmin−2，中值红移z = 0.33 ± 0.01。在我们的调查中，同一样本的前景恒星密度范围为0.23 ± 0.07 arcmin−2至1.1 ± 0.1 arcmin−2。对于W1通量为<$120 μJy的源和i带通量为<$18 μJy的源，我们获得了产生科学级红移的光谱。我们利用这一点来确定2010年8月团队可用的非常初步的数据缩减。因此，我们的研究结果提出了一个保守的估计是什么可能实现使用WISE的初步数据发布的研究领域的星系。
We report on the results of an optical spectroscopic survey at high Galactic latitude (|b| ⩾ 30°) of a sample of WISE-selected targets, grouped by WISE W1 (λeff = 3.4 μm) flux, which we use to characterize the sources WISE detected. We observed 762 targets in 10 disjoint fields centered on ultraluminous infrared galaxy candidates using DEIMOS on Keck II. We find 0.30 ± 0.02 galaxies arcmin−2 with a median redshift of z = 0.33 ± 0.01 for the sample with W1 ⩾ 120 μJy. The foreground stellar densities in our survey range from 0.23 ± 0.07 arcmin−2 to 1.1 ± 0.1 arcmin−2 for the same sample. We obtained spectra that produced science grade redshifts for ⩾90% of our targets for sources with W1 flux ⩾120 μJy that also had an i-band flux ≳ 18 μJy. We used this for targeting very preliminary data reductions available to the team in 2010 August. Our results therefore present a conservative estimate of what is possible to achieve using WISE's Preliminary Data Release for the study of field galaxies.