Physics
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8103s&link_type=abstract
HST Proposal ID #8103
Physics
Hst Proposal Id #8103 Binary Stars
Scientific paper
During the past 6 yrs, we have demonstrated that UV spectra of 4 unique non-magnetic Cataclysmic Variables in quiescence provide accurate temperatures, rotation rates, chemical abundances of the photosphere and Einstein redshift masses of the accreting white dwarfs in these systems. We are now in a position to advance to a broader and deeper understanding of fundamental tangential accretion physics and a global understanding of the accreting white dwarf as a function of its evolutionary history by extending our analyses to 16 systems that are carefully selected to ensure detection of their underlying white dwarfs. Applying the STIS spectral advantages of high sensitivity and resolution to this large sample, we can refine the distribution of temperatures, rotational velocities and composition as a function of orbital period and system type, and determine the correlation of accretion belts with missing or weak boundary layers and anamolous compositions. The physical insights f rom these simplest and most obser v able systems should apply in the broader context of equatorial accretion flows onto central compact objects in a variety of disk accreting systems {T Tauri stars, X-ray binaries, disk accreting symbiotics, Algols with transient disks}.
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