Circumstellar matter in the symbiotic binary EG And

Details Circumstellar matter in the symbiotic binary EG And Circumstellar matter in the symbiotic binary EG And

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.209...79s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 209, no. 1, p. 79-97

Astronomy and Astrophysics

Astrophysics

8

Emission Spectra, H Lines, Stellar Envelopes, Stellar Models, Symbiotic Stars, Ubv Spectra, Equipotentials, Lagrangian Equilibrium Points, Light Curve, Mass Ratios, Mathematical Models, Orbital Mechanics, Radial Velocity

Scientific paper

We present a quantitative model of a proposed common slowly expanding envelope corotating with a symbiotic binary system. The geometry of the envelope is defined by the equipotential surface containing the Lagrangian point L2. The model was applied to the symbiotic binary EG And. The orbital inclination i = 45 deg, and mass ratio of the cool to the hot component, q = 2.8-3.0, are determined. The nature of the primary as well as the secondary minima in the light curves, development of the line profiles, radial velocities and equivalent widths of the hydrogen alpha line through an orbital revolution are explained by this model.

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