ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The bright quasar BR1202 - 0725 was discovered in the automatic plate measuring optical survey for quasars with z 〉 4 (refs 5, 6). The emission redshift is uncertain because Lya absorption produced by a foreground metal line system is present at a redshift z = 4.687 (ref. 7) that is much higher ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/380411a0
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