55 ma: Separation of a spectroscopic triple system

Details 55 ma: Separation of a spectroscopic triple system 55 ma: Separation of a spectroscopic triple system

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..333..211l&link_type=abstract

Tidal Evolution and Oscillations in Binary Stars: Third Granada Workshop on Stellar Structure, ASP Conference Series, Vol. 333,

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We investigate the spectroscopic triple system ma for variations of the elements of the close orbit caused by the tidal interaction with the third component. Based on more than 1300 high-resolution echelle spectra we use the KOREL program to determine the orbital solutions and to disentangle the spectra of the three components. Results confirm the suspected variations of orbital eccentricity and RV-semiamplitude of the close orbit as well as the extraordinary high rate of apsidal advance. From an analysis of the disentangled spectra we determine basic stellar parameters of the three stars.

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