1 / 35

Modeling Large TTVs in Kepler Planetary Systems

This study focuses on the modeling and observation of Kepler planetary systems with significant transit timing variations (TTVs). The research aims to uncover the unique mass-radius relationships, dynamical properties, and full system architectures of these systems. By utilizing TTVs, we can enhance our understanding of resonant dynamics, migration constraints, and the potential existence of additional planets in multi-transiting systems. The study combines insights from numerous researchers to deliver comprehensive results, contributing substantially to the field of exoplanet studies.

galvin
Download Presentation

Modeling Large TTVs in Kepler Planetary Systems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Modeling and Observing KeplerPlanetary Systems with Large TTVs *Sloan Fellowship Daniel Fabrycky*, Eric Agol, Kevin Stevenson, Sarah Ballard, Roberto Sanchis-Ojeda, Joshua Winn, Matthew Holman, TseviMazeh, Kepler Team and the World *U Chicago

  2. Transit Timing Variations Agol et al. 2005, Murray & Holman 2005

  3. The Promise Agol, Steffen, Sari, Clarkson (2005)

  4. The Frustration TrES-2 HD 209458 Steffen & Agol 2005 Agol & Steffen 2007

  5. The Frustration Miller-Ricci+07 HD209458 Miller-Ricci+07 HD189733 Miller-Ricci+06 HD189733 Ballard+10 GJ436 Adams+10 OGLE-TR-113 Gibson+10 TrES-3 Gibson+10 HAT-P-3 Adams+10 OGLE-TR-113 Bean 09 CoRoT-exo-1 Csizmadia+10 CoRoT-exo-1

  6. The Frustration GJ 1214 Carter et al. 2010

  7. Architectures of Other Planetary Systems Basic facts: • Planet number • Masses • Radii Dynamical properties: • Periods (n.b.: their ratios) • Eccentricities • Mutual Inclinations w/ TTV w/ TTV w/ TTV w/ TDV Science Goals: Mass-Radius measurements (Composition) Planet Discovery / Full Architectures Resonant dynamics  Migration Constraints

  8. Results from Kepler • Unique masses: Kepler-9, 11, 18, 30, 36, KOI-1574 (Ofir et al.), KOI-152 (Jontof-Hutter et al.), KOI-620 (Masuda),KOI-314 (Kipping et al.) • Anti-correlation to confirm planethood(Ford et al. 2012, Steffen et al. 2013, Fabrycky et al. 2012, Ji-Wei Xie et al. arxiv:1308.3751, 1309.2329) • Anti-correlation to measure mass and eccentricity distributions(Lithwick et al. 2013, Hadden & Lithwick 2013, Xie 2014). • Clearinghouse of TTV and TDV curves (Mazehet al. 2013)

  9. Kepler 9 • 2 gas giants, TTV’ing (Holman, Fabrycky, et al. 2010)

  10. Kepler 9 • 2 gas giants, TTV’ing (Holman, Fabrycky, et al. 2010)

  11. Kepler 9 • 2 gas giants, TTV’ing (Holman, Fabrycky, et al. 2010)

  12. Kepler 9 • 2 gas giants, TTV’ing (Holman, Fabrycky, et al. 2010)

  13. Kepler 9 • 2 gas giants, TTV’ing (Holman, Fabrycky, et al. 2010)

  14. Kepler 9 • 2 gas giants, TTV’ing (Holman, Fabrycky, et al. 2010)

  15. Kepler 9 • 2 gas giants, TTV’ing (Holman, Fabrycky, et al. 2010)

  16. Kepler 9 • 2 gas giants, TTV’ing (Holman, Fabrycky, et al. 2010)

  17. Kepler 9 MCMC of TTV published (w/ RVs) Mb=42.3±0.6 ME* 80±4 ME Mc= 29.1±0.6 ME* 54±8 ME *(1.0 Mhost assumed) • 2 gas giants, TTV’ing (Holman, Fabrycky, et al. 2010) • See also Ofir & Dreizler

  18. Fits to all TTVs • Chose the large-amplitude, distinctive TTV shapes. • Found dynamical fits to them, and explored uncertainties by DEMCMC • Extrapolated that cloud of fits to future times, for follow-up observations • Needed to invoke additional planets in some multi-transiting systems.

  19. MCMC chains

  20. Differential Evolution MCMC

  21. Kepler-30 Fabrycky, Ford, Steffen et al. 2012

  22. Systems with Distinctive O-C • KOI-872 (Nesvorny et al. 2012) P/P = 1.696

  23. Systems with Distinctive O-C • KOI-872 (Nesvorny et al. 2012) P/P = 1.696

  24. KOI-872 (Nesvorny et al. 2012) P/P = 1.697 P/P = 2.43 Kepler-19 Ballard, Fabrycky, et al. 2011 Inversion including inclination: Nesvorny et al. (2008,09,10)

  25. Spitzer TTV program Spitzer program. • Spitzer program p10127 • Not hot Jupiters • Deep transits • Long-period = Long durations

  26. KOI-1426 d c b Unique solutions KOI-872 (Nesvorny+12) KOI-1474 (Dawson+12) KOI-142(Nesvorny+13)

  27. Cabrera et al. 2013, Agol et al. in prep

  28. KOI-351 = Kepler 90 Kepler-90h; P=330 days

  29. Planes: 13,600km Neutrinos: 11,100km Time zones: 12 http://www.gcmap.com/

  30. KOINet:Carolina van Essen (Gottingen / Stefan Dreizler) Other efforts: Ciardi (KFOP) Pepper (colleges) Santerne Gary (amateur) # targets: A few dozen. Depends strongly on precision. http://www.gcmap.com/

  31. Summary • Kepler is a machine for finding multiplanet systems, both multi-transiting and perturbed systems • TTVs are unveiling full system architectures and additional planets, even in multi-transiting systems. • Following these transit times, world-wide, will be a major effort and legacy of Kepler.

More Related