NATS 102 ch 8 - Chapter 8 Jovian Planet Systems 8.1 A...

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Chapter 8 Jovian Planet Systems
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8.1 A Different Kind of Planet Our Goals for Learning • What are jovian planets made of? • What are jovian planets like on the inside? • What is the weather like on jovian planets?
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Jovian Planets - A Different Kind of Planet Lower density, different composition Rings Numerous moons
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What are jovian planets made of?
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What are jovian planets made of? Jupiter & Saturn: almost all H & He, very less dense ) Uranus & Neptune: <50% H & He, the rest hydrogen compounds (water, methane, more dense ) Why are they different?
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Jovian planet formation Beyond the frost line, planetesimals could accumulate ICE. Hydrogen compounds are more abundant than rock/metal so jovian planets got bigger and acquired H/He atmospheres.
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Jovian planet formation The jovian cores are very similar: ~10x Earth masses The jovian differences are in the amount of H/He gas accumulated. Why did that amount differ?
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formation TIMING: the planet that forms earliest captures the most hydrogen & helium gas. Capture ceases after the first solar wind
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This note was uploaded on 04/02/2008 for the course NATS 102 taught by Professor Coyne during the Spring '08 term at University of Arizona- Tucson.

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NATS 102 ch 8 - Chapter 8 Jovian Planet Systems 8.1 A...

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