Statistics – Computation
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21542501b&link_type=abstract
American Astronomical Society, AAS Meeting #215, #425.01; Bulletin of the American Astronomical Society, Vol. 42, p.336
Statistics
Computation
Scientific paper
The origin of light neutron capture elements is an unsolved problem of
nuclear astrophysics. Previous studies have not been able to provide a
satisfactory mechanism for the production of elements such as zirconium (Zr), yttrium (Y) and strontium (Sr) in the early galaxy. In a previous paper, we studied the abundances of these elements using high-resolution spectra to reduce uncertainty. We now analyze possible sources of error in the computational models used to simulate the stellar atmospheres under observation - models that are used in the calculation of elemental abundances. By adjusting the model parameters such as effective temperature, microturbulent velocity, surface gravity, and metallicity we can judge the relative sensitivity of our calculations to errors in these values.
Burris Debra L.
Lusk J.
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