Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21460010h&link_type=abstract
American Astronomical Society, AAS Meeting #214, #600.10
Astronomy and Astrophysics
Astronomy
Scientific paper
A new technique was recently published (Rijkhorst et al. 2006) that describes raytracing in terms of both long and short characteristics, or hybrid characteristics (HC). It is applicable in a multidimensional, parallel, hydrodynamic, adaptive mesh refinement (AMR) scheme within the FLASH2.5 environment. Courtesy of the authors, we have taken this code and ported it into FLASH3.1, fixing some of the smaller issues (i.e. required source placement on the corners of the cells) and implementing our own ionization routines. We have used the HC module in order to compare calculations of both column density and optical depth in a hydrodynamically-expanding Stromgren sphere, which we have presented here. These results not only test the accuracy of the code but also allows for more flexibility as we investigate how inhomogeneities, imparted by the shorter stellar lifetimes and nucleosynthesis of massive stars, influence observed variation abundances in stellar clusters.
Hinkel Natalie R.
Scannapieco Evan
Timmes Francis
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