The Formation of the Solar System

1
The Formation ofthe Solar System
2
The Orion Nebula
http//www.seds.org/messier/Jpg/m42.jpg
http//www.seds.org/messier/more/m042_hst2.html
3
Very Young Stars with Disks
AU Microscopii
AU Aurigae
http//hubblesite.org/newscenter/archive/releases/
star/protoplanetary-disk/2007/02/
http//hubblesite.org/newscenter/archive/releases/
star/protoplanetary-disk/1999/21/
HD 141569
http//hubblesite.org/newscenter/archive/releases/
star/protoplanetary-disk/1999/03/
4
Brownlee Particles
http//www.windows.ucar.edu/tour/link/comets/imag
es/dust_2_jpg_image.html
5
Carbonaceous Chondrites
http//www.fas.org/irp/imint/docs/rst/Sect19/Sect1
9_2.html
http//www.astro.washington.edu/labs/clearinghouse
/labs/Meteors/meteors.html
6
Chondrules
http//www.amnh.org/education/resources/rfl/web/me
teoriteguide/key.html
http//www.mnh.si.edu/earth/text/5_3_1_0.html
7
Planet Formation in a Nutshell
http//www.astro.psu.edu/users/niel/astro1/slidesh
ows/class43/slides-43.html
8
The Protoplanetary Disk
http//juno.wisc.edu/science_history.html
9
The Contents of the Disk
From Brownlee Ward, Rare Earth
10
Inside the Disk
http//www.psrd.hawaii.edu/Dec98/OriginEarthMoon.h
tml
11
Accretion
http//www.scienceclarified.com/Ro-Sp/Solar-System
.html
12
Giant Planet Formation
13
The result
http//www.enterprisemission.com/_articles/05-14-2
004_Interplanetary_Part_1/Solar20System.jpg
14
Planet Compositions
From Beatty, Peterson, Chaikin, The New Solar
System
15
Evidence of Large Impacts
http//www.seds.org/billa/pics/Luna2.jpg
16
Guiding Questions

• Give a very brief description of what happens
  during star formation.
• What is the shape of the solar nebula? How do we
  know?
• Once the nebula cools enough for solids to
  condense, how would you describe the solid
  particles?
• What kinds of material will be solid near the
  Sun? What kinds of material will be solid far
  from the Sun?
• What is accretion? How does it occur? What
  causes the particles to stick together when they
  are small?
• What are chondrules? Where do we find them?
• What is a planetesimal? What is the difference
  between a fast collision and a slow
  collision? Which of these assists in accretion?
  What causes the particles to stick together now
  that they are larger?
• Where in the solar nebula will you find hydrogen
  and helium gas? How much gas is there compared
  with the solid material?
• How did the giant planets form?
• Why didnt material farther from the Sun than
  Neptune accrete into a planet? What do we call
  this region? What kinds of objects are found
  there?