A spectroscopic investigation of the eclipsing binary Epsilon Aurigae

Details A spectroscopic investigation of the eclipsing binary Epsilon Aurigae A spectroscopic investigation of the eclipsing binary Epsilon Aurigae

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991setstrept.....b&link_type=abstract

Final Report, Jan. 1990 - Apr. 1991 SETS Technology, Inc., Mililani, HI.

Physics

Eclipses, Eclipsing Binary Stars, Iue, Light Curve, Spectral Resolution, Stellar Spectra, Cepheid Variables, Spectroscopy, Spectrum Analysis, Stellar Occultation, Telescopes, Ultraviolet Radiation

Scientific paper

The objectives were to examine, in detail, the spectra of the eclipsing binary Epsilon Aurigae taken with the IUE satellite telescope during the 1982 to 1984 eclipse. All of the low resolution spectra were analyzed and UV light curves are presented. The primary findings are as follows: (1) a constant eclipse depth from 1600 A to longer wavelengths and a sharp drop in the eclipse depth from 1600 to 1200 A; (2) the absence of large amplitude fluctuations in the UV as expected from a Cepheid primary; and (3) equal ingress and egress times in contradiction to that interpreted from visible light curves. The effects of these findings on the eclipse geometry are being studied.

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