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15 Cards in this Set
- Front
- Back
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________ % of all stars are ______________
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90; normal
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how many life stages for a star?
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5
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Whole life star is fusing,______, or produing electrons.
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nucleosysthesis
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Stars can only produce ____ to _____
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He( Helium) - Fe(Iron)
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1st star stage
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protostar stage- gravitational contraction
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T Tauri Stage
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transition stage from 1 to 2. very violent and turbulent, when reaches equilibirium enters 2nd stage.
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2nd Star Stage
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main sequence stage. normal stars. longest period of life, stable sequence, 10 billion years long.
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transition form 2nd to 3rd
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star beings to shrink, getting hotter and descreasing in energy, heluim beging to react- Triple Aplha Process- making the sun expand because of energy. beging to cool.colors change.
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3rd star stage
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Gaint Stage. 3-4 billion years long, fluctuatin energy due to instability in internal mixutre.
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4th star stage
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Variable Stage, flucutuaion in light due to instability in internal mistuvre, lots of classificationsbased on Light Curve. used as distance markers.
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longest know variable star
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mira
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classifications of variable stars
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alot but one is Cepheid, and RR Lyrae.
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light curve
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way of classifying variable stars
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Triple Alpha Process
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Process in which helium begins to react in star making it expand
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when star beguns to make iron, moves into _________ stage
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death
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