Sloan Digital Sky Survey Spectroscopic Lens Search. I. Discovery of Intermediate-Redshift Star-forming Galaxies behind Foreground Luminous Red Galaxies
Sloan Digital Sky Survey Spectroscopic Lens Search. I. Discovery of Intermediate-Redshift Star-forming Galaxies behind Foreground Luminous Red Galaxies
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DOI：
10.1086/382714
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发表时间：
2003-11
期刊：
影响因子：
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通讯作者：
A. Bolton;S. Burles;D. Schlegel;Daniel J. Eisenstein;J. Brinkmann
中科院分区：
文献类型：
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作者：
A. Bolton;S. Burles;D. Schlegel;Daniel J. Eisenstein;J. Brinkmann
我们展示了一份49个光谱强引力透镜候选者的目录，这些候选者是从斯隆数字巡天（Sloan Digital Sky Survey）的50,996个发光红色星系中挑选出来的。潜在的透镜恒星形成星系是通过在这些巨大的前景星系的光谱中存在的背景氧和氢星云发射线来检测的。这种多线选择消除了单线识别的模糊性，并提供了一个非常有希望的候选星系-星系透镜系统样本，在低到中等红移，前景红移范围从0.16到0.49，背景红移范围从0.25到0.81。在我们的样本中确认的任何透镜都将是早期星系质量分布的重要新探测器，为目前已知的透镜高红移类星体提供补充约束。
We present a catalog of 49 spectroscopic strong gravitational lens candidates selected from a Sloan Digital Sky Survey sample of 50,996 luminous red galaxies. Potentially lensed star-forming galaxies are detected through the presence of background oxygen and hydrogen nebular emission lines in the spectra of these massive foreground galaxies. This multiline selection eliminates the ambiguity of single-line identification and provides a very promising sample of candidate galaxy-galaxy lens systems at low to intermediate redshift, with foreground redshifts ranging from 0.16 to 0.49 and background redshifts from 0.25 to 0.81. Any lenses confirmed within our sample would be important new probes of early-type galaxy mass distributions, providing complementary constraints to those obtained from currently known lensed high-redshift quasars.