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Chapter 12
Star Stuff
12
Physics
Undergraduate 1
04/21/2008

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Term
Molecular clouds
Definition
large cool gas cloud that have many materials and dust-star formation
Term
Protosar
Definition
forming star
Term
Jets
Definition
gasses ejected as star forms
Term
Thermal vs. degenerate pressure
Definition

thermal- out

degenerate- stops collapse inward

Term
Helium fushion flash
Definition
star trying new fuel in flash
Term
White dwarf and planetary nebula
Definition
sun dies as core called white dwarf surrounded by planetary nebula
Term
CNO cycle
Definition
more massive stars than sun use this
Term
Iron stage
Definition
last fuel most massive stars can use
Term
Supernova
Definition
huge explosion--type I binary star death type II on large star explosion
Term
Neutron Star
Definition
1.4 to 6 solar masses-10 mile collapsed core of neutrons
Term
Brown Dwarf
Definition
failed stars
Term
Hydrogen shell burning
Definition
older star having fusion moved out from core
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