Ultraviolet Mapping of the Unique Polar HU Aqr

Details Ultraviolet Mapping of the Unique Polar HU Aqr Ultraviolet Mapping of the Unique Polar HU Aqr

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6448s&link_type=abstract

HST Proposal ID #6448

Computer Science

Hst Proposal Id #6448 Binaries And Star Formation

Scientific paper

HU Aqr is a unique eclipsing magnetic cataclysmic variable star offering incredible diagnostic power because in this system all parts of the accretion flow are visible, with eclipses for spatial and emission-line velocity profiles for kinematic information. We will use HST for Doppler and eclipse mapping of the ultraviolet continuum and line radiation. The HST maps of CIV 1550 and HeII 1640 emission combined with our Balmer, He I, and HeII 4686 maps from optical data will probe the velocity field and ionization structure in the complete flow, including the irradiated face of the companion star, the ballistic gas stream from that star to the white dwarf magnetosphere, the threading region between the stream and magnetosphere, the magnetically controlled flow down to the standoff shock, and the surrounding heated regions at the white dwarf surface.

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