Gardner, Tyler, Monnier, John D., Fekel, Francis C., Williamson, Mike, Duncan, Douglas K., White, Timothy R., Ireland, Michael, Adams, Fred C., Barman, Travis, Baron, Fabien, ten Brummelaar, Theo, Che, Xiao, Huber, Daniel, Kraus, Stefan, Roettenbacher, Rachael M., Schaefer, Gail, Sturmann, Judit, Sturmann, Laszlo, Swihart, Samuel J., Zhao, Ming
Precision Orbit of δ Delphini and Prospects for Astrometric Detection of Exoplanets
The Astrophysical Journal, Volume 855, Issue 1
Abstract
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and PAVO instruments on the CHARA long-baseline interferometer, 97 new spectra from the Fairborn Observatory, and 87 unpublished spectra from the Lick Observatory.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
Keywords: astrometry, binaries: close, binaries: spectroscopic, binaries: visual, planets and satellites: detection
