1 / 9

Objects from the Outer Solar System in the Asteroid Belt

Objects from the Outer Solar System in the Asteroid Belt. Marc Berthoud Yerkes Observatory June 18 2012. Scientific Papers. TITLE. Authors. References. Figures and Tables. Abstract. Methods, Data Results, Analysis. Introduction. Conclusion. Introduction: Asteroid Belt.

audra
Download Presentation

Objects from the Outer Solar System in the Asteroid Belt

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. Objects from the Outer Solar System in the Asteroid Belt Marc Berthoud Yerkes Observatory June 18 2012

  2. Scientific Papers TITLE Authors References Figures and Tables Abstract Methods, Data Results, Analysis Introduction Conclusion

  3. Introduction: Asteroid Belt Small objects orbiting between Mars and Jupiter orbital radius (semi-major axis) vs. orbit shape (eccentricity)

  4. Introduction: Asteroid Composition • Metallic • Stony (Silicates) • Carbonaceous • P – Dirty Ice • Dark Ice Very non-uniform composition

  5. Introduction: Planet Migration Model • Jupiter, Saturn, Uranus & Neptune form closer to Sun. Large cloud of comet – type bodies • Orbits evolve  Jupiter & Saturn interact  send Uranus & Neptune further out • Comet – type bodies are scattered This model explains many observations: • Late heavy bombardment • Irregular satellites (moons) of Saturn, Uranus, Neptune

  6. Methods: Simulation • Orbital simulation of 30 million comet – type objects while Saturn, Uranus & Neptune migrate outward. • Simulation runs for 10 million years  many objects leave the Solar System • Simulation of 4 billion years of the orbit of existing particles.

  7. Results: Simulated orbits • Shown are: • All large asteroids • Simulated objects • D / P type asteroids • Good fit of • simulated objects to • dark ice asteroids

  8. Conclusions: • Planet migration model explains diversity in the asteroid belt • Most D/P asteroids could be objects that formed in the outer solar system. • Changes our understanding of solar system formation. Moves the location of the “frost line” further out.

  9. Your Talks: • Paper Sources: • Nature: http://www.nature.com/nature • Science: http://www.sciencemag.org • Astrophysics Data System: http://adsabs.harvard.edu • Procedure: • 2 weeks ahead: Select a paper • 1 week ahead: Talk title and outline • Dates: • Wed, July 18 • Mon, July 23 – Thrs, July 26 • Mon, July 30 – Thrs, Aug 2 • Mon, Aug 6 – Thrs, Aug 9 • Mon, Aug 13

More Related