We present new Keck telescope spectra of the first QSO claimed to show deuterium absorption: Q0014+813. Improved signal on the Lyman series absorption lines gives more accurate information on the hydrogen absorption and more accurate predictions for the position, width, and shape of the associated deuterium absorption. There are three reasons why the absorption line near the expected position of D in the absorption system at zabs = 3.32 is not primarily D: (1) it is 17 ± 1 km s-1 from the expected position, (2) it is too wide, and (3) it does not have the expected profile, which is given by the H I lines. This absorption can be explained by a single H Lyα line at a different redshift. Any absorption from D would be completely blended with this additional H absorption. We find 0 D/H 35 × 10-5 for this absorber which once offered the best evidence for a high primordial value of D/H. In a second absorption system at zabs = 2.80 we again find that H alone can explain the spectrum, without any D. Deuterium has been seen and measured in only two QSOs (Q1937-1009 and Q1009+2956) and both give a low value of D/H = 3.4 × 10-5. Several other QSOs give upper limits which are less sensitive.
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机译：我们介绍了第一个声称具有氘吸收能力的QSO的新Keck望远镜光谱：Q0014 + 813。 Lyman系列吸收线上的改进信号可提供有关氢吸收的更准确信息，并提供有关氘吸收的位置，宽度和形状的更准确预测。在zabs = 3.32处吸收系统中D的预期位置附近的吸收线不是主要由以下三个原因引起：（1）距预期位置17±1 km s-1，（2）也是（3）它没有预期的轮廓，这是由HI线给出的。这种吸收可以用不同红移下的一条HLyα线解释。来自D的任何吸收都将与这个额外的H吸收完全混合。我们发现该吸收体的0 展开▼
