KOI-730 as a System of Four Planets in a Chain of Resonances - PowerPoint PPT Presentation

Loading...

PPT – KOI-730 as a System of Four Planets in a Chain of Resonances PowerPoint presentation | free to download - id: 722f48-MTZhY



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

KOI-730 as a System of Four Planets in a Chain of Resonances

Description:

KOI-730 as a System of Four Planets in a Chain of Resonances Daniel Fabrycky UC Santa Cruz Matthew Holman, Joshua Carter, Jason Rowe, Darin Ragozzine, William Borucki, – PowerPoint PPT presentation

Number of Views:29
Avg rating:3.0/5.0
Slides: 17
Provided by: Daniel1092
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: KOI-730 as a System of Four Planets in a Chain of Resonances


1
KOI-730 as a System of Four Planets in a Chain of
Resonances
Daniel Fabrycky UC Santa Cruz Matthew Holman,
Joshua Carter, Jason Rowe, Darin Ragozzine,
William Borucki, David Koch, and the Kepler Team
2
Planets in Resonance
  • Resonances are common among RV-discovered gas
    giants (1 period commensurability in 3 multi
    systems Wright et al. 2011,
  • a 421 chain in GJ 876 Rivera et al. 2010)
  • Kepler has found Neptune-size pairs especially
    abundant near resonances (Lissauer et al. 2011)
  • Theories suggest the Solar System giants may have
    started in a resonant chain (Morbidelli et al.
    2007, Thommes et al. 2008)

3
KOI-730 Three Pairs of First-Order Resonances
candidate period (d) Rp (RE)
730.04 7.3831 1.8
730.02 9.8499 2.1
730.01 14.7903 2.8
730.02 19.7216 2.4
  • 3468

4
(No Transcript)
5
Laplace-type resonances
  • Involves 3 planets at once
  • Io, Europa, Gaynmede obey ?I-3?E2?G180

6
(No Transcript)
7
(No Transcript)
8
TTVs??
9
  • Theory
  • Match P, T0
  • coplanar
  • mass
  • Mp Rp2.06
  • e 0

Observed transit times through Q8
10
(No Transcript)
11
(No Transcript)
12
Disk Migration Theory
Lee Peale 02 GJ 876 b/c
  • Rules-of-thumb for resonance capture
  • Converging and slow
  • Low eccentricity favors first-order resonances
  • High eccentricity favors high-order resonances

13
Capture into Resonance
  • first-order resonances
  • Laplace-type resonances
  • moderate eccentricities
  • increased stability

14
KOI-730
  • A candidate system of 4 low-mass planets on
    compact, resonant orbits
  • It informs migration models limits the speed,
    direction, and damping properties
  • Its the missing link to RV exoplanet systems,
    the Kepler multis, and maybe even the Solar
    System giants

15
Coorbital no more
  • KOI-730.03s period was revised from 9.861 days
    to twice that 19.722 days. This took it out of
    11 resonance with KOI-730.02. This was apparent
    even in the Q1-Q2 data and is confirmed by the
    data through Q8.

16
  • Stellar properties (determined by photometry,
    accounting for a blended companion, and fit to
    isochrones)

Kp 15.3 mag
About PowerShow.com