Cosmochronology

B.E.J. Pagel The G-Dwarf Problem and Radio-Active Cosmochronology . In Evolutionary Phenomena in Galaxies, Summer School at Puerto de la Cruz, Spain, July i 15, 1988, ed. by J.E. Beckman, B.E.J. Pagel (Cambridge University Press, Cambridge, New York 1989), pp. 201-223... 

The capability of neutralizing daughter ions emitted by a parent atom in nuclear decay would result in practical realization of ULLC for solar neutrino detection, weak interaction physics, cosmochronology, geophysics, environmental research, and other important applications. 

This, however, can be generalized (except for cases where actual time is significant, as in the age-metallicity relation or cosmochronology) by letting co vary arbitrarily with time and defining a time-like variable u by Eq. (8.17). Clayton (1985ab, 1987, 1988) has developed a very convenient series of models in which the inflow rate is... 

Radioactive cosmochronology Table 10.1. Some radioactive species... 

Galactic cosmochronology and stellar thorium abundances theory... 

The theory of nucleo-cosmochronology (and developments up to that time) are described by Schramm (1974), and more recent developments by Cowan, Thielemann and Truran (1991ab). 

D. D. Clayton, in W. D. Arnett and J. W. Truran (eds.), Nucleosynthesis Challenges and New Developments, University of Chicago Press 1985, p. 65, gives a description and simple algorithms for GCE and nucleo-cosmochronological calculations on the basis of his standard inflow models. Our simple inflow model shares some... 

Steiger RH, Jager E (1977) Subcommission on geochronology convention on the use of decay constants in geo- and cosmochronology. Earth Planet Sci Lett 36 359-362 Sundquist ET (1993) The global carbon dioxide budget. Science 259 934-941... 

The 190Pt-186Os system is also potentially useful in geochronology and cosmochronology... 

Clayton, D. D. (1988) Nuclear cosmochronology with analytic models of the chemical evolution of the solar neighborhood. Monthly Notices of the Royal Astronomical Society, 234, 1—36. 

This chapter concerns the fields that use inorganic mass spectrometry to investigate the composition and evolution of matter in the universe and in the solar system. Cosmochemistry is related to nuclear astrophysics, because almost all the chemical elements were synthesized by nuclear reactions in the interior of stars.1 Mass spectrometric analyses of elemental composition, the distribution and variation of isotope abundances are very helpful, especially for cosmochronological studies, in order to explain the formation, history and evolution of stars in our universe and to understand the chemical and nuclear processes. 

There is a resurgence of interest in very cold white dwarf stars as they are at the heart of the method of cosmochronology. This method provides an indepen-... 

Shirey S. B. (1991) The Rb-Sr, Sm-Nd and Re-Os isotopic systems a summary and comparison of their applications to the cosmochronology and geochronology of igneous rocks. In Applications of Radiogenic Isotope Systems to Problems in Geology, Short Course Handbook (eds. L. Heaman and J. Ludden). Mineral. Assoc. Can., Nepean, vol. 19, pp. 109-166. 

Renne P. R. (2000) Ar-40/Ar-39 age of plagioclase from Acapulco meteorite and the problem of systematic errors in cosmochronology. Earth Planet. Sci. Lett. 175(1-2), 13-26. 

Steiger R. H. and Jager E. (1977) Subcommission on geochronology—convention on use of decay constants in geochronology and cosmochronology. Earth Planet. Sci. Lett. 36(3), 359-362. 

Hill, V., Plez, B., Cayrel, R., Beers, T.C., Nordstrom, B., Andersen, J., Sbite, M., Sbite, F., Barbuy, B., Bonifacio, P., Debagne, E., Francois, P., Primas, F. 2002 First stars. I. The extreme r-element rich, iron-poor halo giant CS 31082-001. Implications for the r-process site(s) and radioactive cosmochronology. A A 387, 560. 

Some brief comments on the modelling of the evolution of the r-nuclide content of the Galaxy and on nucleo-cosmochronology... 

---