Clues to the origin of jupiter s trojans the libration amplitude distribution
Download
1 / 7

- PowerPoint PPT Presentation


  • 106 Views
  • Uploaded on

Clues to the origin of Jupiter’s Trojans: the libration amplitude distribution. F. Marzari, P. Tricarico, and H. Scholl Katie McGleam TERPS conference Dec. 7, 2004. Outline. Background Trojan origin: Mutual Collisions Mass Growth of Jupiter Combination Dynamical Instability

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about '' - brook


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Clues to the origin of jupiter s trojans the libration amplitude distribution l.jpg

Clues to the origin of Jupiter’s Trojans: the libration amplitude distribution

F. Marzari, P. Tricarico, and H. Scholl

Katie McGleam

TERPS conference Dec. 7, 2004


Outline l.jpg
Outline amplitude distribution

  • Background

  • Trojan origin:

    • Mutual Collisions

    • Mass Growth of Jupiter

    • Combination

  • Dynamical Instability

  • Put it all together!


Background l.jpg
Background amplitude distribution

  • Trojans orbit at the stable L4 and L5 points of Jupiter.

  • Estimated that there are about half as many Trojans as main belt asteroids. (Shoemaker et al, 1989)

  • Libration amplitudes

Minor Planet Center Plot prepared on 1997 March 7


Capture mutual collisions l.jpg
Capture: Mutual Collisions amplitude distribution

  • Model:

    • Sun, Jupiter, Saturn

    • 5000 planetesimals

    • a: 4.9 – 5.5 AU, e: 0.0 – 0.1, i: 0-1.5°

    • Jupiter & Saturn: fixed mass of 10 M

  • Results:

    • 450 captured, 54 with D < 40°


Capture mass growth of jupiter l.jpg
Capture: Mass Growth of Jupiter amplitude distribution

  • Model:

    • same as before, except:

    • Jupiter and Saturn grow at the same rate from 10 M to

    • their present sizes over 2x104 years.

    • no collisions

  • Results:

    • 1850 captured, all with D > 40°, most would be unstable


Mutual collisions mass growth l.jpg
Mutual Collisions + Mass Growth amplitude distribution

  • Model:

    • Two stages:

      • 1. Collisions only, 2x104 years, Jupiter & Saturn:

      • fixed mass of 10 M

      • 2. Mass growth over another 2x104 years, with collisions

  • Results:

    • 346 captured, 67 with D < 40°

Shaded region:

captured before

mass growth


Add dynamical instability l.jpg
Add Dynamical Instability… amplitude distribution