Journal ArticleDOI
UPPER LIMITS TO THE DEGREE OF CIRCULAR POLARIZATION OF THE INTEGRATED 1418- MHz RADIATION FROM RADIO GALAXIES.
G.A. Seielstad,K.W. Weiler +1 more
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This article is published in The Astronomical Journal.The article was published on 1968-01-01. It has received 5 citations till now. The article focuses on the topics: Radio galaxy & Circular polarization.read more
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Journal ArticleDOI
The Evolution of Massive Stars
TL;DR: In this paper, the authors defined the intermediate mass stars as stars with masses larger than 9 M⊙ at the beginning of core hydrogen burning, and defined a hierarchy of stars with different stages of nuclear burning.
Journal ArticleDOI
Commission 1: Progress in Radio Measurement Methods and Standards
R. W. Beatty,R. C. Baird,J. A. Barnes,G. Birnbaum,M. Birnbaum,H. E. Bussey,E. W. Chapin,G. F. Engen,W. W. Mumford,N. S. Nahman,G. E. Schafer,M. C. Selby,B. O. Weinschel +12 more
TL;DR: On Friday, October 13, 1967, the General Conference of Weights and Measures adopted the atomic definition of the unit of time, the second as mentioned in this paper, which is still heavily weighted toward cesium beam devices, with considerable work also on hydrogen masers.
Journal ArticleDOI
Commission 5: Progress in Radio and Radar Astronomy
TL;DR: The institutions that contributed material for this report are:================== ✓ as mentioned in this paper ✓ The authors of this report have made a minor attempt has been made to mention work performed at other observatories in the U.S.A.
Journal ArticleDOI
The evolution of massive close binary systems - Estimates of the parameters governing mass and angular momentum loss
Dany Vanbeveren,C. De Loore +1 more
TL;DR: In this article, it was shown that mass transfer during overflow and mass transfer as mass loss occurs is related to a parameter a. When a mass element AM is expelled from the primary during this phase, a fraction £ is transferred to the secondary; the remaining part leaves the system.