Physical Sciences and Mathematics Commons^™

Precision Orbit Of Δ Delphini And Prospects For Astrometric Detection Of Exoplanets, Tyler Gardner, John D. Monnier, Francis C. Fekel, Michael H. Williamson, Douglas K. Duncan, Timothy R. White, Michael Ireland, Fred C. Adams, Travis Barman, Fabien Baron, Theo A. Ten Brummelaar, Xiao Che, Daniel Huber, Stefan Kraus, Rachael M. Roettenbacher, Gail Schaefer, Judit Sturmann, Laszlo Sturmann, Samuel J. Swihart, Ming Zhao

Information Systems and Engineering Management Research Publications

Combining visual and spectroscopic orbits of binary stars leads to a determination of the full 3D orbit, individual masses, and distance to the system. We present a full analysis of the evolved binary system δ Delphini using astrometric data from the MIRC and PAVO instruments on the CHARA long-baseline interferometer, 97 new spectra from the Fairborn Observatory, and 87 unpublished spectra from the Lick Observatory. We determine the full set of orbital elements for δ Del, along with masses of 1.78 ± 0.07 M⊙ and 1.62 ± 0.07 M⊙ for each component, and a distance of 63.61 ± 0.89 pc. …