ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] There has been considerable controversy about the population type of Cyg X-2. Gursky, Gorenstein and Giacconi4 interpret the distribution in galactic latitude of the point X-ray sources as characteristic of population I objects. Kristian, Sandage and Westphal2 found a y-velocity of 250 km/s on the ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/218073b0