Physics
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1273..146w&link_type=abstract
17TH EUROPEAN WHITE DWARF WORKSHOP. AIP Conference Proceedings, Volume 1273, pp. 146-151 (2010).
Physics
1
White Dwarfs, Astronomical Telescopes, Brightness, Photometry, Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae, Astronomical And Space-Research Instrumentation, Luminosities, Magnitudes, Effective Temperatures, Colors, And Spectral Classification, Photometric, Polarimetric, And Spectroscopic Instrumentation
Scientific paper
We explore the physics of crystallization in the dense Coulomb plasma of the deep interiors of white dwarf stars using the color-magnitude diagram and luminosity function constructed from Hubble Space Telescope photometry of the globular cluster M 4 and compare it with our results for proper motion cleaned Hubble Space Telescope photometry of the globular cluster NGC 6397. We demonstrate that the data are consistent with a binary mixture of carbon and oxygen crystallizing at a value of Γ higher than the theoretical value for a One Component Plasma (OCP). We show that this result is in line with the latest Molecular Dynamics simulations for binary mixtures of C/O. We discuss implications for future work.
Bergeron Pierre
Campos Fabiola
Kepler S. O.
Montgomery Michael H.
Winget Don E.
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