Temperature and Gravity Dependence of Trace Element Abundances in Hot DA White Dwarfs (94-EUVE-094)

Details Temperature and Gravity Dependence of Trace Element Abundances in Hot DA White Dwarfs (94-EUVE-094) Temperature and Gravity Dependence of Trace Element Abundances in Hot DA White Dwarfs (94-EUVE-094)

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998stin...9946605f&link_type=abstract

Technical Report, NASA/CR-1998-208619; NAS 1.26:208619

Astronomy and Astrophysics

Astronomy

Extreme Ultraviolet Explorer Satellite, Extreme Ultraviolet Radiation, Ultraviolet Astronomy, Beams (Radiation), Stellar Radiation, White Dwarf Stars, Trace Elements, Abundance, Ultraviolet Spectroscopy, Temperature Dependence, Temperature Effects, Gravitational Effects, Helium

Scientific paper

EUV spectroscopy has shown that DA white dwarfs hotter than about 45,000 K may contain trace heavy elements, while those hotter than about 50,000 K almost always have significant abundances of trace heavy elements. One of our continuing challenges is to identify and determine the abundances of these trace constituents, and then to relate the observed abundance patterns to the present conditions and previous evolutionary histories of the hot DA white dwarfs.

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