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 (169) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Aluminum-26 in the early solar system - Fossil or fuel
Authors:
Lee, T.; Papanastassiou, D. A.; Wasserburg, G. J.
Affiliation:
AA(California Institute of Technology, Pasadena, Calif.), AB(California Institute of Technology, Pasadena, Calif.), AC(California Institute of Technology, Pasadena, Calif.)
Publication:
Astrophysical Journal, vol. 211, Jan. 15, 1977, p. L107-L110. (ApJL Homepage)
Publication Date:
01/1977
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ALUMINUM 26, COSMIC DUST, FOSSIL FUELS, NUCLEAR FUSION, SOLAR SYSTEM, ABUNDANCE, CHEMICAL COMPOSITION, INTERSTELLAR MATTER, MAGNESIUM ISOTOPES, MASS RATIOS, METEORITIC COMPOSITION
Comment:
A&AA ID. AAA019.105.007
DOI:
10.1086/182351
Bibliographic Code:
1977ApJ...211L.107L

Abstract

The isotopic composition of Mg was measured in different phases of a Ca-Al-rich inclusion in the Allende meteorite. Large excesses of Mg-26 of up to 10% were found. These excesses correlate strictly with the Al-27/Mg-24 ratio for four coexisting phases with distinctive chemical compositions. Models of in situ decay of Al-26 within the solar system and of mixing of interstellar dust grains containing fossil Al-26 with normal solar system material are presented. The observed correlation provides definitive evidence for the presence of Al-26 in the early solar system. This requires either injection of freshly synthesized nucleosynthetic material into the solar system immediately before condensation and planet formation, or local production within the solar system by intense activity of the early sun. Planets promptly produced from material with the inferred Al-26/Al-27 would melt within about 300,000 years.

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