A first observation of the chromospheric spectrum of the Zeta Aurigae binary HR 6902

Details A first observation of the chromospheric spectrum of the Zeta Aurigae binary HR 6902 A first observation of the chromospheric spectrum of the Zeta Aurigae binary HR 6902

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jrasc..82...49g&link_type=abstract

Journal of the Royal Astronomical Society of Canada (ISSN 0035-872X), vol. 82, April 1988, p. 49-68. SERC-supported research.

Astronomy and Astrophysics

Astronomy

14

Chromosphere, Eclipsing Binary Stars, Spectrum Analysis, Stellar Spectra, Ultraviolet Spectra, Zeta Aurigae Star, Astronomical Spectroscopy, Near Ultraviolet Radiation, Stellar Rotation

Scientific paper

Spectroscopy of the composite-spectrum binary HR 6902 around the time of total eclipse reveals absorption features that are due to the chromosphere of the G9 II primary star. By applying a method of digital subtraction of spectra the author has succeeded in isolating those features. This paper presents a description and measurements of the chromospheric spectrum of HR 6902A in the wavelength region λλ3650 - 4450 Å. From a study of the spectra at ingress and egress the author attempts to elucidate the geometry of the eclipse and to derive the rotation period of the G9 II star.

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