R-process pattern in the Very-Metal-Poor Halo Star CS 31082-001

Details R-process pattern in the Very-Metal-Poor Halo Star CS 31082-001 R-process pattern in the Very-Metal-Poor Halo Star CS 31082-001

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001sf2a.conf..205h&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

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CS 31082-001 was discovered to be very strongly r-process-enhanced, leading to the first 238 abundance measurement in an old star (Cayrel et al. 2001). Together with the observed 232 abundance, this observation provides the opportunity to use both radioactive species for dating the progenitor to this star. However, age computations all rely on the hypothesis that the r-process pattern in this star is solar (as was indeed observed in the other famous r-process enhanced very metal poor star CS22892-052). This hypothesis is tested here by presenting the preliminary analysis of over 20 abundances of neutron-capture elements in the range Z=38 to Z=82.

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