ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Up to z -3.3, searches for high-z QSOs by their Ly-a + N v emission are best carried out on Illa-J prism plates, which have a red cutoff to their spectral response at -5,200 A. The IIIa-F plates, with a corresponding limit at 6,800 A, extend the range above z -3.3 to a possible maximum of z = 4.6. ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/322038a0
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