Formation of Stars and Planets
Formation of Stars and Planets Astr 1010-100
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This 2 page One Day of Notes was uploaded by Alyssa Karounos on Tuesday January 27, 2015. The One Day of Notes belongs to Astr 1010-100 at University of Washington taught by Dr. Oliver Fraser in Winter2015. Since its upload, it has received 161 views. For similar materials see Introductory Astronomy 1 in Astronomy at University of Washington.
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Date Created: 01/27/15
126 15 I Goals A Explain how the formation of the solar system created the patterns of motion we see today B Explain why worlds of different compositions form at different distances from the central star II Consider Revelation in the Solar System A Counterclockwise 1 almost everything B Clockwise 1 none C Both 1 comets III Consider Orbits in the Solar System A Inclination within 100 of Earth 1 almost everything B Inclination beyond 100 of Earth 1 Pluto Eris small moons IV Consider Rotations in the Solar System A Counterclockwise 1 almost everything B Clockwise 1 Venus C In between 1 Uranus D small objects seem to have their own way V Galaxies A Galaxies are shaped at and disk like like a pancake B Heating hydrogen gas we see bubble C galaxies made of stars dust and loose gas VI The galactic disk orbit at about 200kms so slightly closer around the galaxy than the other one What happens as they orbit A the inside cloud will eventually pass the outside one B passing creates turbulence stream of stuff moving at different speeds VII Galactic Clouds A only cool clouds molecular clouds can collapse B the smaller they get the more important their angular motion is C as they collapse the center heats up which resists further collapse until that energy radiates away D as they become smaller and dense they fragment 071 VIII IX weemmwwpowP can39t form molecules inside such a hot sun the smaller they are the more important the spin is no conduction in space must radiate light to cool down Molecular Cloud Cores A Cloud Cores dense parts more gravity these are small things may or which form from each cloud inside each one is a protostar centers are hot and glowing resists further collapse until that energy radiates away angular momentum is really important inside of closed forms an accretion disk spins very quickly in the middle Protostar in middle on top of accretion disk place thick enough to feel friction gaps in disk help form planets in between will all spin then rotate and orbit in same direction temperature decreases with distance from protostar