Presentation Abstract

Title The Very Compact Five Exoplanet System KOI-500: Mass Constraints from TTVs, Resonances, and Implications
Author Block Darin Ragozzine1, Kepler Team
1University of Florida.
Abstract NASA's Kepler Mission has discovered thousands of planet candidates, including nearly 900 in systems with multiple transiting planet candidates. Such multi-transiting systems are extremely valuable for understanding the combined physical and orbital characteristics of planetary systems. Most of these candidates are in Systems with Tightly-packed Inner Planets (STIPs), which are characterized by a concentration of dynamically tight planets near 0.1 AU. There are about 10 Kepler systems that show 5 or more planets transiting, though it is not yet fully clear whether these are unusual or just a high multiplicity tail of a continuous distribution of STIPs. The first known 5-candidate system was KOI-500 and we here present results which confirm and/or validate all 5 planets and discuss its several distinct properties. Even for a STIP, KOI-500 has a very compact architecture, with all 5 planets within 0.1 AU. The estimated radii of the 1.0, 3.1, 4.6, 7.1, and 9.5-day period planets are 1.3, 1.4, 1.5, 2.4, and 2.6 Earth radii, respectively. The outer four planets are very near unique and interlocking three-body resonances. The outer planets also show Transit Timing Variations (TTVs), allowing for good mass constraints and helping to fill in the exciting small planet mass-radius relation. The inclinations of the planets are generally well constrained, which, in combination with TTVs, allow for an investigation into the true mutual inclinations of this system. We will present an overview of the results of our analysis of the KOI-500 system and place it in context of other STIPs discovered by Kepler and Doppler surveys.



Technical Support
Phone: 217-398-1792
Email: Help Desk

DPS Meeting Home

Events and Workshops

Embargo Policy for DPS Meetings
  • When meeting abstracts are available publicly, either electronically or in print, they are not embargoed.
  • Abstracts reflect the situation at the time of submission and often do not correspond exactly to the paper that is ultimately presented, usually months later. Reporters should note that preparing a story based exclusively on an abstract is ill-advised
  • Some results to be presented at DPS meetings are also the subject of papers whose manuscripts are available via preprint servers such as arXiv.org or that have already been published in scholarly journals. Such publicly available results are not embargoed.
  • Interviews with presenters, as well as graphics, animations, and other information to be presented for the first time at the meeting, are embargoed until the time of presentation, where “time of presentation” means the start time of the oral or poster session in which the paper will be given, or the start time of the corresponding press conference (if any), whichever comes first.
  • For more information, see http://aas.org/press/embargo_policy.
  • 44th DPS Program published in BAAS volume 44 #5.