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Cosmological Element Production

Wagoner, Robert V. (1967) Cosmological Element Production. Science, 155 (3768). pp. 1369-1376. ISSN 0036-8075.

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Two recent observations appear to have provided critical information about the past history of the universe. The thermal character of the microwave background radiation suggests that the universe has expanded from a state of high temperature and density, and places constraints on such a big-bang cosmology. The observations of very weak helium lines in the spectra of certain stars in the halo of our galaxy are possibly due to a low primeval abundance of this element. However, the simplest model of a big-bang cosmology leads to much higher helium abundances, such as are observed in the solar system and in many stars. The production of helium can be reduced either by altering the early expansion rate or by introducing degenerate electron neutrinos. Observations of interstellar and intergalactic deuterium and He^4, and possibly even He^3 and Li^7, are needed to test the various models.

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Additional Information:© 1967 American Association for the Advancement of Science. Many thanks go to William A. Fowler, Fred Hoyle, and Kip Thorne for all their help. This article is based in large part on collaborative work with Fowler and Hoyle, reported in 19. This work was supported in part by the National Science Foundation (GP-5391) and the Office of Naval Research [Nonr-220( 47)].
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Office of Naval Research (ONR)Nonr-220(47)
Issue or Number:3768
Record Number:CaltechAUTHORS:20151214-072453684
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Official Citation:Cosmological Element Production Robert V. Wagoner Science 17 March 1967: 155 (3768), 1369-1376. [DOI:10.1126/science.155.3768.1369]
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:62834
Deposited By: Ruth Sustaita
Deposited On:14 Dec 2015 17:39
Last Modified:03 Oct 2019 09:22

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