First measurement of the uranium/thorium ratio in a very old star: implications for the age of the Galaxy

Details First measurement of the uranium/thorium ratio in a very old star: implications for the age of the Galaxy First measurement of the uranium/thorium ratio in a very old star: implications for the age of the Galaxy

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001sf2a.conf..173c&link_type=abstract

Abstracts from SF2A-2001: Semaine de l'Astrophysique Francaise, meeting held in Lyon, France, May 28-June 1st, 2001, Eds.: F. Co

Astronomy and Astrophysics

Astrophysics

Scientific paper

In the frame of an ESO Large Programme devoted to the study of the most
primitive stars in our Galaxy ([Fe/H] < -2.8) we have been able to
measure for the first time the abundance of uranium in a star. Now, the
couple U/Th seems the best radioactive chronometer for dating the oldest
stars of the Galaxy.

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