An Archive Analysis of a Decade of HST White Dwarf Spectra

Details An Archive Analysis of a Decade of HST White Dwarf Spectra An Archive Analysis of a Decade of HST White Dwarf Spectra

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hst..prop.9202h&link_type=abstract

HST Proposal ID #9202

Computer Science

Hst Proposal Id #9202 Hot Stars

Scientific paper

We propose to conduct a comprehensive analysis of the existing body of HRS and STIS spectra of the white dwarf stars. The primary objective of this investigation is to utilize the high spectral resolution and relatively high S/N of these spectra to perform detailed analyses of the line shapes of photospheric absorption lines in the spectra of hot DA white dwarfs. In particular, we are interested in clear evidence of chemical stratification in the photospheres of these stars, since it now appears that stratification can explain the occurrence of super-abundances observed in a number of stars and we now possess the theoretical models to address this phenomenon. In addition, we will obtain new statistically- based abundance analyses of a number of hot DO stars using a number of improved models and analysis techniques.

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