A Detailed Analysis of the HD 73526 2:1 Resonant Planetary System
Abstract
We present six years of new radial-velocity data from the Anglo-Australian and Magellan Telescopes on the HD 73526 2:1 resonant planetary system. We investigate both Keplerian and dynamical (interacting) fits to these data, yielding four possible configurations for the system. The new data now show that both resonance angles are librating, with amplitudes of 40 degrees and 60 degrees, respectively. We then perform long-term dynamical stability tests to differentiate these solutions, which only differ significantly in the masses of the planets. We show that while there is no clearly preferred system inclination, the dynamical fit with i=90 degrees provides the best combination of goodness-of-fit and long-term dynamical stability.
Keywords
Cite
@article{arxiv.1311.6559,
title = {A Detailed Analysis of the HD 73526 2:1 Resonant Planetary System},
author = {Robert A. Wittenmyer and Xianyu Tan and Man Hoi Lee and Jonathan Horner and C. G. Tinney and R. P. Butler and G. S. Salter and B. D. Carter and H. R. A. Jones and S. J. O'Toole and J. Bailey and D. Wright and J. D. Crane and S. A. Schectman and P. Arriagada and I. Thompson and D. Minniti and M. Diaz},
journal= {arXiv preprint arXiv:1311.6559},
year = {2015}
}
Comments
Accepted for publication in ApJ