Spectrophotometry of Epsilon Aur, 3295-8880 A

Details Spectrophotometry of Epsilon Aur, 3295-8880 A Spectrophotometry of Epsilon Aur, 3295-8880 A

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985eepa.rept...79l&link_type=abstract

In NASA, Washington The 1982-1984 Eclipse of Epsilon Aurigae p 79 (SEE N86-12168 02-89)

Other

Auriga Constellation, Eclipsing Binary Stars, Spectrophotometry, Broadband, Echelette Gratings, Spectral Bands, Stellar Color, Visual Observation

Scientific paper

Spectrophotometric scans were obtained at 8 A resolution from 3295 to 8880 A on twenty nights before, during, and after the recent eclipse of epsilon Aurigae, beginning with a pre-eclipse observation on 5 March 1982 U.T. The observations were reduced to absolute flux using the standard stars 109 Vir or xi(2) Ceti. The data confirm that the eclipse is essentially gray over the entire visible spectrum, as others have noted from broadband photometry. High resolution echellograms (450 to 6700 A) made through mid-eclipse and the scans show changes in the equivalent widths of H alpha, Na D, and O I as large as a factor of two.

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