The spectroscopic orbit of the symbiotic star EG Andromedae

Details The spectroscopic orbit of the symbiotic star EG Andromedae The spectroscopic orbit of the symbiotic star EG Andromedae

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...198..173m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 198, no. 1-2, June 1988, p. 173-178. CNR-supported research; Ministero della P

Astronomy and Astrophysics

Astrophysics

13

Binary Stars, Stellar Orbits, Stellar Spectra, Symbiotic Stars, Line Spectra, Power Spectra, Radial Velocity, Variable Stars

Scientific paper

The orbital parameters of EG And are determined, combining published observational data with 16 new radial velocities obtained using an echelle spectrograph on the 1.82-m telescope at Asiago Observatory since 1983. The results are presented in tables and graphs and briefly characterized. Parameters reported include period P = 481.2 + or - 0.7 d, eccentricity e = 0.24 + or - 0.15, semiamplitude K = 7 + or - 1 km/s, mass function f(m) = 0.018 + or - 0.005 solar mass, and baricentric velocity V(0) = -94 + or - 1 km/s. It is inferred that the UV minima of EG And are not caused by eclipses of the hot component by the late giant component.

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