Computer Science
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984iue..prop.1801e&link_type=abstract
IUE Proposal ID #CBGJE
Computer Science
Scientific paper
All of the W UMa binary systems now seem to be extremely strong sources of chromospheric and transition-region emission. This is a proposal to study how non-radiative heating affects the atmospheric structure and common envelope of the hotter A-type W UMa systems. Ultraviolet and optical light curves for the F2 V system V566 Oph will be solved to determine the degree of gravity darkening and the wavelength dependence of limb darkening in the star's atmsophere. Combined with the predictions of atmospheric models, the observed wavelength dependence of limb darkening will provide a measurement of how much the source function in the upper photosphere has been modified by surface activity. V566 Oph has been chosen for this work because it has a relatively uncomplicated light curve, and because it will be possible to make ground-based observations of V566 Oph at Indiana University.
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