Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (36) (Citation History)
· Refereed Citations to the Article
· Reads History
· Translate This Page
More on big-bang nucleosynthesis with nonzero lepton numbers
Beaudet, G.; Yahil, A.
AA(Montreal, Universite, Montreal, Canada)
Astrophysical Journal, Part 1, vol. 218, Nov. 15, 1977, p. 253-262. Research supported by the U.S.-Israel Binational Science Foundation and National Research Council of Canada. (ApJ Homepage)
Publication Date:
NASA/STI Keywords:
Abundance, Big Bang Cosmology, Leptons, Nuclear Fusion, Deuterium, Helium Isotopes, Lithium Isotopes, Universe
Bibliographic Code:


The calculation of big-bang nucleosynthesis with nonzero lepton numbers is extended to atomic weights less than 12. The observed abundances of D and He-4 place only a lower limit on the present mean baryon density of the Universe: not less than 5 x 10 to the -31st g/cu cm for primordial D/H equals .000014 by number (assuming no astration), and not less than 3.5 x 10 to the -31st g/cu cm if the primordial abundance was twice as high, and half of it has been destroyed in stars. In the case of astration, primordial Li-7 can account at most for only about 25 percent of the observed abundance (15 percent for zero lepton numbers).

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences

More Article Retrieval Options

HELP for Article Retrieval

Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

Find Similar Abstracts:

Use: Authors
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
arXiv e-prints