Statistics – Computation
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5125e&link_type=abstract
American Astronomical Society, AAS Meeting #211, #51.25; Bulletin of the American Astronomical Society, Vol. 39, p.819
Statistics
Computation
Scientific paper
We present a new computational technique for generating steady state models of synchronously rotating, unequal-mass binaries using the cold white dwarf equation of state (EOS). Using this realistic EOS, it has previously only been possible to construct equal-mass double white dwarf (DWD) binaries (Hachisu 1986). Our technique permits the construction of close DWD systems having any specified total mass, mass ratio, and separation, including the construction of semi-detached models in which the lower-mass white dwarf fills its Roche lobe. We have generated a variety of "inspiraling” DWD sequences having a constant total mass and mass ratio. The semi-detached model at the termination of each of these sequences provides an excellent starting condition for dynamical studies of mass-transfer in DWD binary systems.
This work has been supported, in part, by NASA/ATP grant NNX07AG84G and NSF grants AST-0407070 and DGE-0504507, the latter of which supports the NSF/IGERT program on Multi-scale Computation of Fluid Dynamics at LSU.
Even Wesley P.
Tohline Joel E.
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