ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The binary X-ray source Vela X-l was discovered by the Uhuru and SAS 3 satellites1 during 1975 and has been continuously monitored since then by a variety of satellites2'3. The optical counterpart was identified4 as the B supergiant HD77581 at distance of (1.9 ±0.2) kpc from the Earth. The ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/326567a0
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