The UCSD/Keck Damped Lyα Abundance Database: A Decade of High-Resolution Spectroscopy
The UCSD/Keck Damped Lyα Abundance Database: A Decade of High-Resolution Spectroscopy
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UCSD/Keck 阻尼 Lyα 丰度数据库：高分辨率光谱十年
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
J. Cooke
中科院分区：
文献类型：
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作者：
J. Prochaska;A. Wolfe;J. Howk;E. Gawiser;S. Burles;J. Cooke
我们公布的凯克/HIRES和凯克/ESI光谱，我们已经获得了在第一个10年的凯克天文台操作。我们的完整样品包括42个HIRES光谱和39个ESI光谱，沿着沿着65条独特的视线，提供了对1085 DLA系统的丰度测量。标准化的数据可以从期刊或我们的支持网站下载。该数据库包括我们关于阻尼Lyα系统的化学丰度、运动学和金属丰度的论文中包含的所有视线。这些数据也被用来论证精细结构常数的变化。我们提出了10个阻尼Lyα系统的新的化学丰度测量结果，以及153个阻尼Lyα系统在z > 1.6时的高分辨率金属丰度测量结果（包括文献中的值）的汇总表。然而，我们要注意的是，这个金属丰度样本（以及所有以前的样本）比随机样本偏向更高的N值。
We publish the Keck/HIRES and Keck/ESI spectra that we have obtained during the first 10 years of Keck observatory operations. Our full sample includes 42 HIRES spectra and 39 ESI spectra along 65 unique sight lines providing abundance measurements on ≈85 DLA systems. The normalized data can be downloaded from the journal or from our supporting Web site. The database includes all of the sight lines that have been included in our papers on the chemical abundances, kinematics, and metallicities of the damped Lyα systems. This data has also been used to argue for variations in the fine-structure constant. We present new chemical abundance measurements for 10 damped Lyα systems and a summary table of high-resolution metallicity measurements (including values from the literature) for 153 damped Lyα systems at z > 1.6. We caution, however, that this metallicity sample (and all previous ones) is biased to higher N values than a random sample.