The hierarchical triple system HD 109648

Details The hierarchical triple system HD 109648 The hierarchical triple system HD 109648

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997balta...6...55j&link_type=abstract

Baltic Astronomy, vol. 6, p. 55

Astronomy and Astrophysics

Astronomy

4

Triple Stars, Stellar Spectra, Cross Correlation, Radial Velocity, Orbital Elements, Hierarchies, Stellar Orbits

Scientific paper

We present observations of the hierarchical triple-lined spectroscopic triple system HD 109648. Using an extended version of a new 2D cross-correlation technique, TODCOR, we derive radial velocities independently for each component of the system. From a simultaneous orbital solution for hierarchical triple systems, we determine orbital elements for the inner and outer orbits. With a very short outer orbital period, and a small outer-to-inner period ratio, HD 109648 is one of the best candidates in which to observe evolution in the orbital elements of a hierarchical triple system.

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