Bibcode
Metcalfe, T. S.; Gonzalez Perez, J. M.; Irwin, A. W.; Kawaler, S. D.; Montgomery, M. H.; Winget, D. E.; Wood, M. A.
Bibliographical reference
American Astronomical Society, 201st AAS Meeting, #119.02; Bulletin of the American Astronomical Society, Vol. 34, p.1299
Advertised on:
12
2002
Citations
1
Refereed citations
1
Description
Almost every star in our galaxy will eventually become a white dwarf.
Since they are relatively simple compared to main-sequence stars, white
dwarfs provide one of the best opportunities for learning about stellar
structure and evolution. Studies of pulsating white dwarfs give us the
opportunity to learn about their internal composition and structure, and
allow us to refine our understanding of their cooling properties. The
latter is important if we want to use white dwarf stars as chronometers
for stellar populations -- providing an independent method of dating the
various components of the galaxy, and yielding a lower limit on the age
of the universe. All studies of this kind rely on detailed computer
simulations of white dwarf stars, and our understanding can only be as
good as our models. Because of a surge of interest in these areas, many
independent codes have been developed in the past few years, each
including some subset of the state-of-the-art physics that should
ideally be incorporated together. Unfortunately, none of these codes are
publicly available, so the collective progress in this area is slower
than it needs to be, and the results of studies performed with various
codes are difficult to compare. OpenWD is an attempt to initiate an
open, world-wide collaboration to develop a complete, cutting-edge
computer code for modeling the evolutionary and pulsational
characteristics of white dwarf stars. The project is beginning with a
complete FORTRAN code from the public domain to serve as the basis for
updates and additions from collaborators who want to contribute modules
that include their own prescriptions for various physical ingredients.
The resulting code will always be freely available under the terms of
the GNU General Public License (GPL), which also imposes this
requirement on any derived works. This will facilitate comparison
between versions, and will provide an invaluable tool for research in
asteroseismology and cosmochronometry, now and into the future.